ADTRAN | TSU LT | User manual | ADTRAN TSU LT User manual

TSU LT
1202.060L2
USER MANUAL
61202.060L2-1A
September 1997
901 Explorer Boulevard
P.O. Box 140000
Huntsville, AL 35814-4000
Phone: (205) 963-8000
© 1997 ADTRAN, Inc.
All rights reserved.
Printed in USA.
FCC regulations require that the following information be provided to the customer in this
manual.
1. This equipment complies with Part 68 of the FCC rules. The required label is attached to the
bottom of the chassis.
2. If your TSU LT causes harm to the telephone network, the Telephone Company may discontinue your service temporarily. If possible, they will notify you in advance. If advance notice
is not practical, you will be notified as soon as possible. You will be advised of your right to
file a complaint with the FCC.
3. Your telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the proper operation of your equipment. If they do, you will be given advance notice so as to give you an opportunity to maintain uninterrupted service.
4. If you experience trouble with the equipment TSU LT, please contact ADTRAN at (205) 9638000 for repair/ warranty information. The telephone company may ask you to disconnect
this equipment from the network until the problem has been corrected, or until you are sure
the equipment is not malfunctioning.
5. This unit contains no user serviceable parts.
6. An FCC compliant telephone cord and modular plug is provided with this equipment. This
equipment is designed to be connected to the telephone network or premises wiring using a
compatible modular jack which is Part 68 compliant. See installation instructions for details.
7. The following information may be required when applying to your local telephone company
for leased line facilities.
Service Type
1.544 Mbps - SF
1.544 Mbps - SF and B8ZS
1.544 Mbps - ESF
1.544 Mbps - ESF
REN/SOC
6.0F
6.0F
6.0F
6.0F
FIC
04DU9-BN
04DU9-DN
04DU9-1KN
04DU9-1SN
USOC
RJ48C
RJ48C
RJ48C
RJ48C
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT:
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio frequencies. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Shielded cables must be used with this unit to ensure compliance with Class A FCC limits.
Changes or modifications to this unit not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
CANADIAN EQUIPMENT LIMITATIONS
The Industry Canada Certification label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective,
operational, and safety requirements. The Department does not guarantee the equipment will operate to the user's satisfaction.
Before installing this equipment, users should ensure that it is permissible to
be connected to the facilities of the local telecommunications company. The
equipment must also be installed using an acceptable method of connection.
In some cases, the company's inside wiring associated with a single line individual service may be extended by means of a certified connector assembly
(telephone extension cord). The customer should be aware that compliance
with the above conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations
made by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and internal metallic waterpipe
system, if present, are connected together. This precaution may be particularly important in rural areas.
Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or an electrician, as appropriate.
The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the
device, to prevent overloading. The termination on a loop may consist of any
combination of devices subject only to the equipment that the total of the LNs
of all devices does not exceed 100.
The ringer equivalence number (REN) assigned to each terminal adapter is
used to determine the total number of devices that may be connected to each
circuit. The sum of the RENs from all devices in the circuit should not exceed
a total of 5.0.
Table of Contents
Chapter 1: Introduction ....................................................................................................
T1/FT1 Overview...............................................................................................................
T1 Service Offerings ....................................................................................................
Fractional T1 .................................................................................................................
TSU LT Overview...............................................................................................................
Functional Description................................................................................................
Features .........................................................................................................................
Interfaces.......................................................................................................................
TSU LT Interfaces ...............................................................................................................
Network Interface (NI) ...............................................................................................
Nx56/64 Serial Interface.............................................................................................
Control Port Input .......................................................................................................
Chain Port Output .......................................................................................................
TWO Methods of Control .................................................................................................
Front Panel....................................................................................................................
T-Watch Pro Management Software Program ........................................................
TSU LT Clock Sources .......................................................................................................
Network Timing ..........................................................................................................
DTE Timing ..................................................................................................................
Internal Timing ............................................................................................................
TSU LT Testing ...................................................................................................................
Self Test .........................................................................................................................
Loopback Tests.............................................................................................................
Network Loopbacks ............................................................................................
Line Loopback................................................................................................
Payload Loopback .........................................................................................
Data Loopback ...............................................................................................
DTE Interface Loopbacks....................................................................................
DTE Loopback ...............................................................................................
Pattern Generation ......................................................................................................
511 ..........................................................................................................................
1:8 ...........................................................................................................................
All Zeros................................................................................................................
All Ones.................................................................................................................
Application..........................................................................................................................
Warranty and Customer Service......................................................................................
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Chapter 2: Installation ......................................................................................................
Unpack, Inspect ..................................................................................................................
Shipped by ADTRAN .................................................................................................
Provided by Customer................................................................................................
Power Connection ..............................................................................................................
Wiring ..................................................................................................................................
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Table of Contents
Network ........................................................................................................................
Control-In/Chain-In....................................................................................................
Chain-Out .....................................................................................................................
Nx56K/64K DTE (V.35) ..............................................................................................
Power Up Testing and Initialization................................................................................
Self Test .........................................................................................................................
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Chapter 3: Operation.........................................................................................................
Operation.............................................................................................................................
Front Panel ..........................................................................................................................
IDENTIFICATION OF NUMBERS..................................................................................
General Menu Operation...................................................................................................
Menu Features..............................................................................................................
Data Field........................................................................................................
Display Field ..................................................................................................
Arrows ............................................................................................................
Example Menu Operation ..........................................................................................
To Set the Data Field ...................................................................................................
To View Display Only Data Fields............................................................................
To Exit Any Menu Field Operation or Display .......................................................
Menu Structure ...................................................................................................................
Overview: Four Opening Menu Functions .............................................................
1)STATUS..............................................................................................................
1)NI PERF REPORTS ....................................................................................
2)CURR ERR/ALM.......................................................................................
3)ERR/ALM HIST.........................................................................................
2)CONFIG .............................................................................................................
1)NETWORK (NI) .........................................................................................
2)UNIT ............................................................................................................
3)PORT ............................................................................................................
3)UTIL....................................................................................................................
1)TIME/DATE ...............................................................................................
2)SOFTWARE REV .......................................................................................
3)REINIT UNIT..............................................................................................
4)ADDRESS ....................................................................................................
5)SET PASSCODE .........................................................................................
5)FACT RESTORE .........................................................................................
4)TEST....................................................................................................................
1)NETWORK TESTS .....................................................................................
2)RUN SELF TEST.........................................................................................
3)PORT TESTS ...............................................................................................
1)Status.................................................................................................................................
Purpose..........................................................................................................................
1)NI PERF RPTS, Submenu of 1)Status ....................................................................
2)CURR ERR/ALM, Submenu of 1)Status ..............................................................
3)ERR/ALM Hist, Submenu of 1)Status ..................................................................
2)Config................................................................................................................................
Purpose..........................................................................................................................
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Table of Contents
1)Network (NI), Submenu of 2)Config.....................................................................
1)FORMAT .....................................................................................................
2)CODE...........................................................................................................
3)YEL ALRM..................................................................................................
4)XMIT ALRM ...............................................................................................
5)CLOCK SOURCE .......................................................................................
6)BIT STUFFING ...........................................................................................
7)SET LBO ......................................................................................................
8) RX SENSITIVITY.......................................................................................
2)Unit, Submenu of 2)Config .....................................................................................
Operation ..............................................................................................................
1)CNTRL PORT .............................................................................................
2)ALARMS .....................................................................................................
3)Port, Submenu of 2)Config .....................................................................................
1)RATE 56/64 ................................................................................................
2)CHANNELS ...............................................................................................
3)DTE TX CLK ...............................................................................................
4)START CHAN ............................................................................................
5)# OF CHAN ................................................................................................
6)DATA...........................................................................................................
7)CTS ...............................................................................................................
8)DCD .............................................................................................................
9)DSR...............................................................................................................
10)INBAND....................................................................................................
3)UTIL ..................................................................................................................................
Purpose .........................................................................................................................
1)Time/Date, Submenu of 3)Util ..............................................................................
Keystroke Summary for Editing Time/Date ...................................................
2)Software Rev, Submenu of 3)Util...........................................................................
3)Reinit Unit, Submenu of 3)Util...............................................................................
4)Address, Submenu of 3)Util ...................................................................................
5)Set Passcode, Submenu of 3)Util............................................................................
6)Fact Restore, Submenu of 3)Util.............................................................................
4)Test ....................................................................................................................................
Purpose .........................................................................................................................
1)Network Tests, Submenu of 4)Test........................................................................
1)LOCAL LOOPBCK ....................................................................................
2)REMOTE LOOPBK ....................................................................................
3)TEST PATTERN .........................................................................................
4)CLR ERRORS..............................................................................................
5)INSERT 511 ERRORS ................................................................................
2)Run Selftest, Submenu of 4)Test ............................................................................
3)Port Tests, Submenu of 4)Test ................................................................................
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Chapter 4: Example Operations......................................................................................
Testing Example .................................................................................................................
Far End Looped Back Test ................................................................................................
Network Interface Test ...............................................................................................
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Table of Contents
Appendix A: TSU LT Menu Tree ................................................................................... 53
Appendix B: DTE Data Rate Chart ................................................................................ 55
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List of Figures
Figure 1-1:
Figure 1-2:
Figure 1-3:
Figure 1-4:
Figure 1-5:
Figure 1-6:
Figure 1-7:
Figure 1-8:
Figure 1-9:
Figure 3-1:
Figure 3-2:
Figure 3-3:
Figure 3-4:
Figure 3-5:
Figure 3-6:
Figure 3-7:
Figure 3-8:
Figure 3-9:
Figure 3-10:
Figure 3-11:
Figure 3-12:
Figure 3-13:
Figure 3-14:
Figure 3-15:
Figure 3-16:
Figure 3-17:
Figure 3-18:
Figure 3-19:
Figure 3-20:
Figure 3-21:
Figure 4-1:
Figure 4-2:
Figure 4-3:
Figure 4-4:
Figure 4-5:
TSU LT Unit - Front View.......................................................................
TSU LT Rear Panel ..................................................................................
TSU LT Interfaces....................................................................................
Network Timed Clock Source..................................................................
DTE Clock Source....................................................................................
Internal Clock Source...............................................................................
Network Loopback Tests..........................................................................
DTE Interface Loopback ..........................................................................
Simple Bridge Application on a T1 or FT1 Circuit..................................
Front Panel Layout ...................................................................................
Cursor on Menu Item ...............................................................................
Sub-Menu Fields ......................................................................................
TSU LT Main Menu Screen.....................................................................
TSU LT Main Menus ...............................................................................
Status Menu..............................................................................................
Severely Errored Seconds Screen.............................................................
Loss of Signal (Current Errors/Alarms) Screens......................................
Clear History Screen ................................................................................
Configuration Menu .................................................................................
Network Submenu....................................................................................
Configuration Submenu ...........................................................................
Inband Remote Configuration ..................................................................
Utility Menu .............................................................................................
Time/Date Screen .....................................................................................
Address Screen .........................................................................................
Complete Test Menu ................................................................................
Local Loopback Screen ............................................................................
Clear Errors Screen ..................................................................................
Self Test Results Screen ...........................................................................
Loopback Setting Screen..........................................................................
Main Menu 4)TEST Selected...................................................................
Test Menu with NETWORK TESTS Selected ........................................
Local Loopback Test Menu......................................................................
Remote Loopback Test Menu ..................................................................
Test Pattern Screen...................................................................................
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v
List of Figures
Figure 4-6:
Figure A-1:
vi
Clear Errors Screen................................................................................... 52
TSU LT Menu Tree .................................................................................. 54
TSU LT User Manual
61202.060L2-1
List of Tables
Table 2-A:
Table 2-B:
Table 2-C:
Table 2-D:
Table 3-A
Table B-A
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Network Pin Assignments ........................................................................
Control-In/Chain-In Pin Assignments ......................................................
Chain-Out Pin Assignments .....................................................................
Primary V.35 Pin Assignment..................................................................
Normal Mode Operation ..........................................................................
DTE Data Rate vs. DS0s ..........................................................................
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List of Tables
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Chapter 1
Introduction
T1/FT1 OVERVIEW
T1 digital communication links have been used by the telephone companies
(telcos) for voice transmission since the early sixties. The D4 channel bank is
an example of a T1 digital carrier system that was introduced in the mid-seventies and is still widely used by the telcos. Communication demands of businesses continued to grow to the point that the telcos began offering T1 service
directly to the public. D4 channel banks began to be used for T1 in corporate
network topographies for voice. The technological advances in computer development also created a demand for T1 data communication which now is a
large part of the T1 traffic.
T1 Service Offerings
T1 is a digital service that is delivered to the user over two pairs of wires from
the service provider. The signal operates at 1.544 mega bits per second (Mbps)
and is usually extended by repeaters that are installed about every mile after
the first 6000 feet. The T1 signal is divided into 24 time slots or digital signal
level zeros (DS0s) which operate at 64 kilo bits per seconds (kbps). Each time
slot is occupied by digitized voice or by data.
The T1 signal originally used a type of framing known as D4 Superframe
which identifies how the T1 is multiplexed. Extended Superframe (ESF) is an
enhancement of that framing format. ESF provides a non-disruptive means of
full time monitoring on the digital facility. It was originally used by the service
provider to monitor the performance of their service offering. Since the introduction of ESF, equipment that is installed in private networks can also provide the same performance information to the user.
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Chapter 1. Introduction
Fractional T1
Fractional T1 (FT1) lets the buyer purchase less than a full T1 circuit between
two points. Most carriers offer fractional T1 in increments of 56 or 64 kbps.
Connection is made to the same network elements. The network allows multiple users to share the same interoffice T1 bandwidth.
FT1 remains almost exclusively an inter-exchange carrier (IXC) service. Local
exchange carriers (LECs) typically do not offer FT1, so the user’s proximity to
the IXC’s point-of-presence (POP) is key in the savings that fractional T1 offers.
FT1 local access is available in two forms, 56 kbps or a full T1 line. In 56 kbps
the required number of digital data service (DDS) lines is extended from the
IXC POP and the bandwidth is combined at the office on an outbound T1 circuit. The user pays for the individual 56K lines and the amount of the interoffice T1 utilized. In T1 access, the user pays for a full T1 to the IXC POP and
then only for the bandwidth utilized.
TSU LT OVERVIEW
This section provides a functional description of the TSU LT, describes its features, and illustrates its four interfaces.
Functional Description
The ADTRAN TSU LT is one of several T1 multiplexers that offer complete
flexibility for connection of various data sources to T1 or FT1 facilities. This
family of TSU multiplexers includes the following:
•
•
•
2
TSU and TSU LT - T1 CSU/DSUs with a single Nx56K/64K serial port.
TSU 100 - Same as the TSU with the added feature of a slot in the rear panel to house an option module. Each module offers up to four additional
data ports.
TSU 600 - Same as the TSU with the added feature of six slots in the rear
panel to house up to six option modules. Each module offers up to four
additional data ports for a total of 24 possible data ports.
TSU LT User Manual
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Chapter 1. Introduction
ENTER
TEST
ALM
ERR
PWR
CANCEL
TSU LT
TD
RD
RS
CS
Figure 1-1
TSU LT Unit - Front View
The TSU LT serves as the link between user data sources such as local area network (LAN) bridges and routers, computers, CAD systems, and teleconferencing equipment. The amount of bandwidth allocated to the port is custom
programmable. The data terminal equipment (DTE) data can occupy contiguous or alternate channels in the T1 stream, and the channels may start at any
position.
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Chapter 1. Introduction
Number Identification
Item
Function
1. Network
T1-FT1 network interface
2. In
Bantam test jack
3. Out
Bantam test jack
4. MON (Monitor)
Bantam test jack
5. Chain-In
Interface of chain-in
6. Chain-Out
Connects to chain-in of another TSU LT
7. V.35 Nx56/64
DTE port
8. Power Switch
Used to turn power on or off
9. Power Cord
Captive 3 prong power cord
1
2 34
TEST JACKS
NETWORK
IN OUT MON
5
6
7
8
9
CONTROL
CHAIN IN CHAIN OUT
OFF
V.35 Nx56/64
ON
220VAC/60HZ
.075A
Figure 1-2
TSU LT Rear Panel
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Chapter 1. Introduction
Features
Features of the TSU LT are the following:
•
•
•
•
•
•
A DS1 interface and an Nx56/64 DTE serial interface port.
Easy configuration capabilities using simplistic menus displayed in a liquid crystal display (LCD) window operated by a front panel keypad.
Timing is selectable from the network, from the Nx56/64 DTE port, or internally.
All ones, all zeros, 511, and 1:8 test patterns.
Extensive self test and monitoring provides assurance of proper operation.
Flexible channel allocation (any starting channel and alternate or contiguous).
Interfaces
The TSU LT is equipped with four interfaces (see Figure 1-3):
•
•
•
•
Network DS1 interface per AT&T 62411
Nx56/64 serial V.35 high speed interface
Control input (RS-232)/Chain port input
Chain port output
PC or Modem
Control
Input
NI
Network
TSU
Nx56/64
Chain
Output
Chain
Input
NI
Chain
Output
TSU
Nx56/64
Figure 1-3
TSU LT Interfaces
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Chapter 1. Introduction
TSU LT INTERFACES
Network Interface (NI)
The Network Interface (NI) port complies with the applicable ANSI and AT&T
standards:
•
•
•
•
•
•
Alternate mark inversion (AMI) or binary 8 zero suppression (B8ZS) coding
Automatic or manual line build out
Auto detect or manual settings for D4 or ESF framing
Network performance monitoring and reporting
Test loopbacks by local and remote
Extensive self test
Nx56/64 Serial Interface
Features of the Nx56/64 serial interface include:
•
•
•
•
•
•
Data rates: N*56K or N*64K, where N=1 to 24 (DS0s)
Inverted data (inverted high-level data link control (HDLC))
A V.35 interface
Standard V.35 connectors
Test loopbacks with 511 pattern generation and check
Extensive self test
Control Port Input
Features of the control port input include:
•
•
•
•
6
RS-232 input from a personal computer (PC) or a modem for control of the
TSU LT
Chain input from another TSU LT
Up to 9600 baud operation
Acts as input for PC proxy agent control or as input for a chained connection
TSU LT User Manual
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Chapter 1. Introduction
Chain Port Output
Features of the chain port output include:
•
•
•
RS-232 output to chain control to other TSU LTs
Up to 9600 baud operation
Automatic setup; no user input required
TWO METHODS OF CONTROL
Front Panel
The front panel provides complete and easy control of all items that can be
configured through menu guided options. The front panel LCD also displays
the status of operation and performance reports for the unit. A complete discussion of the operation of the front panel and all the menu options is found
in the chapter Operation.
T-Watch Pro Management Software Program
T-Watch PRO is the ADTRAN management software program that allows the
user to control the TSU LT from a PC. It provides complete control over the
configuration of the TSU LT using a graphic interface. The T-Watch PRO program displays the same status and performance data as the front panel LCD.
This data is displayed in the form of tables and graphs.
The T-Watch PRO program has the following capabilities:
•
•
61202.060L2-1
Interfaces with a modem which permits dialing into a remote TSU LT location to configure the unit or read the unit’s status or performance.
The performance data read from the units can be exported in a file which
is compatible with common spread sheet programs.
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Chapter 1. Introduction
TSU LT CLOCK SOURCES
The TSU LT is operable from various clock sources permitting it to perform
properly in many different applications. The network interface clocking options are set by using the Network Configuration menu options. Three clock
source options are available:
•
•
•
Network timed
DTE timed
Internal timing
The clocking option selected always designates the clock source for transmission.
Clocking necessary for receiving data is always recovered from incoming data.
Network Timing
The network is the source of timing. The received data clocking is looped back
to the network where it is used to determine the transmission timing. This option is also referred to as looped timed as the transmission clock is derived
from the received clock. See Figure 1-4.
OSC
T1 XMIT
(DSU)
T1 Receive
Network
Interface
NX56K/64K
DTE CLOCK
DTE
Figure 1-4
Network Timed Clock Source
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Chapter 1. Introduction
DTE Timing
The DTE is the source of timing. The TSU LT uses the incoming DTE clock to
determine the transmission timing. This is typically used in applications such
as limited distance line drivers, where it is necessary to have the DTE as the
primary clock source. See Figure 1-5.
OSC
T1 XMIT
(DSU)
T1 Receive
Network
Interface
NX56K/64K
DTE CLOCK
DTE
Figure 1-5
DTE Clock Source
Internal Timing
The TSU LT is the source of timing. The TSU LT is configured to use its own
internal oscillator as the source of timing. Applications include private line
driver circuits where one end is set to network and the other to internal. See
Figure 1-6.
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Chapter 1. Introduction
OSC
T1 XMIT
(DSU)
T1 Receive
Network
Interface
NX56K/64K
DTE CLOCK
DTE
Figure 1-6
Internal Clock Source
TSU LT TESTING
The TSU LT offers three forms of testing:
•
•
•
Self test
Loopback tests
Pattern generation and check
Self Test
The self test checks the integrity of the internal operation of the electronic components by performing memory tests and by sending and verifying data test
patterns through all internal interfaces. Although actual user data cannot be
passed during these tests, the self test can run with the network and DTE interfaces in place and disturbing any external interface.
The self test automatically executes upon power up. It can also be commanded
from a front panel menu or from the control port.
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Chapter 1. Introduction
In addition to the specified self tests, background tests are also run on various
parts of the internal electronics. These run during normal operation to confirm
continued correct functioning. The background tests include:
•
•
Monitoring the phase locked loop for lock
Standard background network performance monitoring, as required by
ANSI T1.403 and AT&T 54016 for which the results are stored
Loopback Tests
A number of different loopbacks can be invoked locally from the front panel,
by T-Watch commands, or remotely by using special inband codes (AT&T D4
network loop up/loop down codes and V.54 loop up/loop down codes for the
Nx56K/64K serial interface). Additionally the loopbacks can be remotely controlled by out-of-band commands via the T1 ESF facility data link (FDL), or
from T-Watch via a modem connection. Network and DTE interface loopbacks are discussed in this section.
Network Loopbacks
There are two types of network loopbacks; see Figure 1-7.
Line Loopback
Loops all of the received data back toward the network. The transmitted data
is the identical line code that was received, including any bipolar violations or
framing errors.
Payload Loopback
Similar to line loopback, except that the framing is extracted from the received
data and then regenerated for the transmitted data.
Data Loopback
Loops back all active DS0s and inserts idle code into unoccupied DS0s.
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Chapter 1. Introduction
TSU
V.35
NI CSU
DS1
Interface
Data Loopback
Payload Loopback
Line Loopback
Figure 1-7
Network Loopback Tests
DTE Interface Loopbacks
The Nx56K/64K serial interface offers a DTE loopback. See
Figure 1-8.
DTE Loopback
Loops all data from the DTE back towards the DTE. This loopback may be initiated by the DTE asserting the local loopback (LL) input on the connector or
by using front panel or T-Watch commands. The DTE (or the external test
equipment) must provide any test pattern in order to check the DTE interface.
DTE
Loopback
TSU
Nx56/64
Interface
T1
Network Interface
(NI)
Nx56/64 to
network control
circuit
to DTE
Figure 1-8
DTE Interface Loopback
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Chapter 1. Introduction
Pattern Generation
The TSU LT offers four available test patterns: 511, 1:8, All Ones, and All Zeros.
511
The 511 pattern is generated and checked by the Nx56K/64K serial interface.
It only appears in the DS0s assigned to the Nx56K/64K port. When used in
conjunction with the payload loopback at the far end as previously described,
an end-to-end integrity check can be made on the DTE ports.
1:8
The 1:8 is a stress pattern which places the maximum number of 0s in the transmitted data. This is always done over all DS0s. This pattern is used in conjunction with external test equipment to determine if the T1 line is performing
acceptably under a stress condition. Each channel of the T1 has only one bit
set.
All Zeros
Generates an all zeros pattern in every channel.
All Ones
Generates an all ones pattern in every channel.
APPLICATION
Utilizing the V.35 DTE interface, a bridge or router can be interfaced to the network. The bandwidth used is programmable at Nx56 or Nx64 data rates for
T1 or FT1 service. The bandwidth can be selected as contiguous or alternate.
Figure 1-9 shows a simple bridge application.
Bridge Router
NX56/64
TSU
ENTER
TSU
ENTER
TEST
ALM
ERR
PWR
V.35
NX56/64
Bridge Router
TEST
ALM
ERR
PWR
CANCEL
TSU LT
CANCEL
TD
RD
RS
TSU LT
CS
TD
RD
RS
CS
(Public T1)
V.35
Figure 1-9
Simple Bridge Application on a T1 or FT1 Circuit
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Chapter 1. Introduction
WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within five (5) years from the date
of shipment if it does not meet its published specifications or fails while in service. For detailed warranty, repair and return information refer to the ADTRAN Equipment Warranty and Repair and Return Policy Procedure.
Return Material Authorization (RMA) is required prior to returning equipment to ADTRAN.
For Service, RMA requests, or more information, contact ADTRAN Technical
Support listed at the end of this manual.
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Chapter 2
Installation
UNPACK, INSPECT
Carefully inspect the TSU LT for any shipping damage. If damage is suspected, file a claim immediately with the carrier and then contact ADTRAN Customer Service. If possible, keep the original shipping container for use in
shipping the TSU LT back for repair or for verification of damage during shipment.
Shipped by ADTRAN
The following items are included in the ADTRAN shipment:
•
•
•
•
TSU LT unit
Line interface cable: an 8-position modular to 8-position modular
User manual
Loopback plug
Provided by Customer
The following items must be supplied by the customer:
•
•
DTE cable(s)
Cable for supervisory port if utilized
POWER CONNECTION
Each TSU LT unit is provided with a captive eight-foot power cord, terminated
by a three-prong plug which connects to a grounded power receptacle.
Power to the TSU LT must be from a grounded 220-230 VAC, 60 Hz power source.
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Chapter 2: Installation
WIRING
Network
On the rear panel, the TSU LT has an eight-position modular jack labeled Network. This connector is used for connecting to the network. See Table 2-A for
the network connector pin assignments.
Connector Type
Product Number
(USOC) RJ-48C
AMP# 555164-2
Table 2-A
Network Pin Assignments
16
PIN
NAME
1
R1 RXDATA-RING
2
T1 RXDATA-TIP
—
3
UNUSED
—
4
R TXDATA-RING
5
T TDXDATA-TIP
—
6, 7, 8
UNUSED
—
TSU LT User Manual
DESCRIPTION
Receive data from the network
Send data towards the network
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Chapter 2: Installation
Control-In/Chain-In
Use this as an RS-232 port for connection to a computer or modem (chain-in)
or another TSU (chain-out). See Table 2-B for the pin assignment for this connector.
Connector Type
Product Number
RJ-48
AMP# 555164-2
Table 2-B
Control-In/Chain-In Pin Assignments
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PIN
NAME
1
GND
2
UNUSED
3
RXDATA
4
UNUSED
5
TXDATA
6
UNUSED
7
RI
8
UNUSED
DESCRIPTION
Ground connected to unit chassis
—
Data received by the TSU
—
Data transmitted by the TSU
—
Ring indicate from modem
—
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Chapter 2: Installation
Chain-Out
Use this to connect to another TSU LT chain-in connector. The pinout for this
connector is shown in Table 2-C.
Connector Type
Product Number
RJ-48
AMP# 555164-2
Table 2-C
Chain-Out Pin Assignments
18
PIN
NAME
1
GND
2
UNUSED
3
TXDATA
4
UNUSED
5
RXDATA
6, 7, 8
UNUSED
DESCRIPTION
Ground-connected to unit chassis. Connect to GND of next unit (pin 1)
—
Data transmitted to chained units by the
TSU. Connect to RX DATA of the next unit
(chain-in pin 3)
—
Data received from chained units by the
TSU. Connect to TX DATA of the next unit
(chain-in pin 3)
—
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Chapter 2: Installation
Nx56K/64K DTE (V.35)
The pinout for this connector is shown in Table 2-D.
Connector Type
Product Number
V.35
AMP# 92-4883-3-1
Table 2-D
Primary V.35 Pin Assignment
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PIN
CCITT
DESCRIPTION
A
101
Protective ground (PG)
B
102
Signal ground (SG)
C
105
Request to send (RTS) from DTE
D
106
Clear to send (CTS) to DTE
E
107
Data set ready (DSR) to DTE
F
109
Received line signal detector (DCD) to
DTE
H
—
Data terminal ready (DTR) from DTE
J
—
Ring indicator (RI)
L
—
Local loopback (LL)
N
—
Remote loopback (RL)
R
104
Received data (RD-A) to DTE
T
104
Received data (RD-B) to DTE
V
115
RX clock (RC-A) to DTE
X
115
RX clock (RC-B) to DTE
P
103
Transmitted data (TD-A) from DTE
S
103
Transmitted data (TD-B) from DTE
Y
114
TX clock (TC-A)
AA
114
TX clock (TC-B)
U
113
External TX clock (ETC-A) from DTE
W
113
External TX clock (ETC-B) from DTE
NN&K
—
Test mode (TM) to DTE
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Chapter 2: Installation
POWER UP TESTING AND INITIALIZATION
When shipped from the factory, the TSU LT is set to factory default conditions.
At the first application of power, the unit automatically executes self tests followed by an initialization sequence which sets up the unit.
Self Test
Upon a power-up or commanded self tests, the LCD displays ADTRAN TSU
INITIALIZING and the LEDs illuminate sequentially. When the self test is
completed with no failures detected, the LCD momentarily displays ALL
TESTS PASSED. If a failure is detected, it is displayed in the LCD window.
The automatic self test procedure consists of the following steps:
1.
Board level tests
a. Random access memory (RAM) tests; erasable programmable read only
memory (EPROM) checksum.
b. On-board data path. Sending a known test pattern through an on-board
loop.
2. Unit level tests
a. Front panel LED verification.
b. Phase lock loop verify.
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Chapter 3
Operation
OPERATION
The TSU LT can be configured and controlled from either the local front panel
or from a PC using the T-Watch Management Software Program.
FRONT PANEL
The TSU LT front panel is shown in Figure 3-1. Unit features are identified by
call-outs.
10
12
1
2
3
4
PWR
ERR
ALM
TEST
TD
RD
RS
CS
5
6
7
ENTER
CANCEL
TSU LT
9
11
13
8
Figure 3-1
Front Panel Layout
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Chapter 3: Operation
IDENTIFICATION OF NUMBERS
Item
Function
Displays:
1. PWR
LED ON when power is received by TSU LT.
2. ERR
LED ON when errored events have happened in
the last second.
3. ALM
LED ON when an alarm condition exists.
4. TEST
LED ON when unit is in test mode.
5. TD
LED ON when DTE data is being received.
6. RD
LED ON when DTE data is being received.
7. RS
LED ON when request to send (RTS) active from
DTE.
8. CS
LED ON when TSU LT has clear to send (CTS)
active toward DTE.
9. LCD
A 2X16 LCD window that displays menu items used in configuration and displays information useful in monitoring the
unit.
Operation Keys:
22
10. Up/Down
Arrows used to travel up/down menu trees.
Arrows increase/decrease numeric values and scroll
through selections.
11. Enter
Used to choose paths and make selections.
12. Cancel
Used to exit selections or menu tree branches.
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Chapter 3: Operation
GENERAL MENU OPERATION
The TSU LT uses a multilevel menu structure containing both menu items and
data fields. All menu operations and data are displayed in the LCD window.
The menu items are numbered and can be viewed by using the Up and Down
arrows.
Menu Features
Data Field
A menu item followed by a colon (:) identifies an editable data field.
Display Field
A menu field followed by alarm or error information.
Arrows
Menus that display small Up or Down arrows in the lower right corner indicate there are more menu items than are viewable on a two-line LCD. The additional menu items are accessed with the Up or Down arrows. (Undisplayed
menu items are also available by using the appropriate menu number.)
Example Menu Operation
To select a menu item:
Use:
The Up and Down arrows to place the cursor on the desired menu item (in this example 2) CONFIG). See Figure
3-2.
Figure 3-2
Cursor on Menu Item
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Chapter 3: Operation
With the cursor on the number 2:
Press:
Results:
Enter
The unit responds by displaying the first two available submenu fields. The cursor is on the first field.
If there are more than two menu fields, a Down arrow is visible on the lower right corner. See
Figure 3-3.
Figure 3-3
Sub-Menu Fields
To select the desired submenu item use the same operation used to select an
opening menu item.
Use:
Results:
The Up and Down keys to place the cursor on the desired menu item. In this example 1) NETWORK (NI).
The unit responds by displaying the first two available data field items. The cursor is on the number of
the first item. When there are more than two data
field items for the selected submenu, a Down arrow
is visible on the lower right corner.
To Set the Data Field
Data fields that are available for editing are preceded by a colon (:).
Press:
Results:
Use:
Enter while the cursor is located on the submenu item
number
The cursor moves to the data field, (to the right of the
submenu item name)
The Up and Down arrows to scan the available value
settings, which display in the data field position one
at a time
When the desired value is in the data field position:
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Chapter 3: Operation
Press:
Results:
Enter to set the value.
The unit is set for the value shown in the data field
and the cursor moves back to the submenu item position indicating the operation is complete; another
submenu field may be selected, or use Cancel to return to the submenu.
Cancel is available any time during the operation. If used prior to pressing Enter after
making a data change, the original data value is restored and the cursor returns to the
submenu field.
To View Display Only Data Fields
An example of a display only data field is found by selecting the following
menu choices:
1.
2.
3.
Select from the Main menu 1)STATUS.
Select submenu 2)CURR ERR/ALM.
LOSS OF SIGNAL INACTIVE/ACTIVE is displayed giving the current
state of the alarm.
To Exit Any Menu Field Operation or Display
Press:
Cancel as many times as required to return to the desired menu level.
MENU STRUCTURE
The TSU LT uses hierarchical menus to access its many features. The Main
menu level (see Figure 3-4) leads to submenus (see Figure 3-5). All menu operations are displayed in the LCD window. The complete TSU LT menu diagram is shown in the appendix TSU LT Menu Tree.
Figure 3-4
TSU LT Main Menu Screen
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Chapter 3: Operation
This menu structure diagram is a limited overview. A detailed description of each
menu item, presented in menu order, immediately follows. A complete menu diagram
is shown in the appendix TSU LT Menu Tree.
1) NI PERF REPORTS
1) STATUS
2) CURR ERR/ALM
3) ERR/ALM HIST
1) NETWORK (NI)
MAIN MENU
2) CONFIG
2) UNIT
3) PORT
3) UTIL
1) TIME/DAY
2) SOFTWARE REV
3) REINIT UNIT
1) NETWORK TESTS
4) TEST
4) ADDRESS
2) RUN SELFTEST
5) SET PASSCODE
3) PORT TESTS
6) FACT RESTORE
Figure 3-5
TSU LT Main Menus
Menu flow is normally depicted from left to right. Arrows on the lower right
of the screen indicate the direction of additional menu items. At every level of
the menu, pressing Cancel returns the system to the previous menu level.
Pressing Cancel repeatedly returns the system to the Main menu.
The opening menu is the access point to all other operations. There are four
Main menu items, 1)Status, 2)Configure, 3)Utility, 4)Test. Each Main Menu
item has several functions and submenus to identify and access specific parameters. In the discussions that follow, each Main item menu contains a complete menu diagram to identify the location of each operation.
Overview: Four Opening Menu Functions
1)STATUS
The Status menu provides the ability to view the status of the TSU LT operation. This menu includes the following items:
1)NI PERF REPORTS
Used to view the user set of data on the Network Interface Performance Reports in compliance with ANSI T1.403 and AT&T document TR54016.
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2)CURR ERR/ALM
Used to view current errors/alarms which are being reported by the TSU LT.
3)ERR/ALM HIST
Used to view and clear history errors and alarms.
2)CONFIG
The Configuration menu is used to set the TSU LT operational configuration.
This menu includes the following sub-items.
1)NETWORK (NI)
Used to set all of the parameters associated with the network interface.
2)UNIT
Used to control TSU LT control port baud rate and to set up the dial out function.
3)PORT
Used to configure the parameters associated with the V.35 port.
3)UTIL
The Utility menu is used to view and to set system parameters. This menu includes the following sub-items:
1)TIME/DATE
Accesses the display and allows the setting of the current time and date.
2)SOFTWARE REV
Displays the version number of the current software revision level. This information is required when requesting assistance from ADTRAN Customer Service or when updates are needed.
3)REINIT UNIT
Used to re-initialize the unit. This menu item is not used to restore the factory
default settings for all parameters.
4)ADDRESS
Used to view and change the current Unit Address used for control port access.
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Chapter 3: Operation
5)SET PASSCODE
Allows a passcode to be set.
5)FACT RESTORE
Restores factory default settings for all unit parameters.
4)TEST
The Test menu is used to initiate different types of tests of the unit and to view
test results. Test results are displayed in the LCD window. The menu contains
three sub-items.
The execution of tests disrupts some normal operations. See individual menu items
concerning tests before executing.
1)NETWORK TESTS
Used to control the activation of loopbacks and the initiation of data test patterns.
2)RUN SELF TEST
Used to execute an internal self test.
3)PORT TESTS
Used for the testing of the DTE port.
Each of the four Main menu items is discussed in detail in the following pages.
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Chapter 3: Operation
1)STATUS
Purpose
The Status menu branch provides the ability to view the status of the TSU LT
operation. See Figure 3-6.
RESET PERF CNTRS
SES
ES
1) NI PERF RPTS
%AV
%EF
LOSS OF SIGNAL
CVs
AIS ALARM
2) CURR ERR/ALM
OUT OF FRAME
1) STATUS
YELLOW ALARM
CLEAR HISTORY
3) ERR/ALM HIST
RED ALARM
LOSS OF SIGNAL
CODE VIOLATIONS
AIS ALARM
BIPLOAR VIOL
OUT OF FRAME
FRAME BIT ERRORS
YELLOW ALARM
PLL ALARM
RED ALARM
CODE VIOLATIONS
BIPLOAR VIOLATIONS
FRAME BIT ERRORS
PLL ALARM
Figure 3-6
Status Menu
1)NI PERF RPTS, Submenu of 1)Status
The Network Interface Performance Reports displays the user copy of the performance data. The TSU LT maintains this performance data on the network
in compliance with ANSI T1.403 and AT&T document TR54016. The data displayed is data accumulated over the last 15 minutes and over the last 24 hours.
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Chapter 3: Operation
These fields cannot be edited, only cleared as previously discussed. Only the
user copy of performance data is cleared. See Figure 3-7.
Data Values
Figure 3-7
Severely Errored Seconds Screen
SES
Number of severely errored seconds
ES
Number of errored seconds
%AV
% of available seconds
%EF
% of error free seconds
CVs
Number of code violations
Continue with standard operating procedures to exit the display.
Since only the user’s copy of performance data is cleared by the TSU LT, the data displayed here might be different from the data being sent to the network as performance
report message (PRM) data.
2)CURR ERR/ALM, Submenu of 1)Status
The Current Error/Alarm menu is used for viewing currently Active/Inactive
errors and alarms (see Figure 3-8).
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Chapter 3: Operation
Alarm Investigated
State
(Active/Inactive)
Figure 3-8
Loss of Signal (Current Errors/Alarms) Screens
The Up and Down arrows are used to access the complete display of the errors/alarms that are currently active. The following are alarms and errors
which can be seen.
Loss of Signal
No pulses received at NI
AIS Alarm
Unframed All-Ones received at NI
Out of Frame
No framing pattern sync at NI
Yellow Alarm
Receiving yellow alarm pattern from NI
Red Alarm
Loss of signal/out of frame (LOS/OOF) causing red
alarm at NI
Code Violations
Cyclic redundancy check (CRC) errors in ESF, or bipolar violations (BPVs) in Superframe Format (SF) were
received at NI
Bipolar Violations BPVs in SF or ESF
Bipolar Violations BPV's in SF or ESF
Bit Errors
Frame Bits received incorrectly at NI.
PLL Alarm
Unable to sync up to selected clock
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Chapter 3: Operation
3)ERR/ALM Hist, Submenu of 1)Status
The Error/Alarm History menu is used for viewing history of errors and
alarms. If an alarm has occurred since the last CLEAR HISTORY selection, the
menu is active. If the condition has not occurred then the menu is inactive (see
Figure 3-9).
Figure 3-9
Clear History Screen
These conditions are the same as for the CURR ERR/ALM submenu except
that these are history Alarm/Errors instead of current Alarm/Errors.
2)CONFIG
Purpose
The Configuration menu is used to set the TSU LT operational configuration,
including all of the network interface parameters, and the allocation of the
DS0s and the port parameters. See Figure 3-10.
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Chapter 3: Operation
1) FORMAT
2) CODE
3) YEL ALRM
4) XMIT PRM
5) CLOCK SOURCE
1) NETWORK (NI)
6) BIT STUFFING
7) SET LBO
8) RX SENSITIVITY
1) POSITION
2) MODEM INIT
1) CNTRL PORT
3) DATA RATE
2) ALARMS
1) TRAPS
2) UNIT
2) CONFIG
2) OUTPUT
3) TEL NUM
1) RATE 56/64
2) CHANNELS
3) DTE TX CLK
4) START CHAN
3) PORT
5) # OF CHAN
6) DATA
7) CTS
8) DCD
9) DSR
10) INBAND
Figure 3-10
Configuration Menu
1)Network (NI), Submenu of 2)Config
This menu is used to access the configuration of parameters associated with
the network interface in the TSU LT. There are eight submenu items that include setting the format, the line build out (LBO), the clock source (see Figure
3-11).
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Chapter 3: Operation
Figure 3-11
Network Submenu
The fields and parameters available are:
1)FORMAT
Sets the frame format for the NI
D4
ESF
AUTO
D4 is equivalent to Superframe Format (SF).
2)CODE
Sets the line code for the NI.
AMI
B8ZS
3)YEL ALRM
Enables and disables the transmitting of yellow alarms.
ENA (enable)
DISA (disable)
4)XMIT ALRM
Enables and disables the transmitting of performance report messages (PRM)
data on the facility data link (FDL). The PRM data continues to be collected
even if XMIT PRM is disabled (possible only with ESF Format).
ENA
DISA
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5)CLOCK SOURCE
Selects the clock source for transmission toward the network from the NI.
NETWORK
DTE
INTERNAL
6)BIT STUFFING
When enabled, Bit Stuffing causes the TSU LT to monitor for ones (1s) density
violations and insert a one (1) when needed to maintain ones at 12.5%. This
option should be disabled if B8ZS is enabled, if Nx56 is selected, or if alternate
channels are being used. All of these other options already ensure pulse density requirements.
ENA
DISA
7)SET LBO
Selects the line build out for the network interface. In AUTO mode, the TSU
LT will set the LBO based on the strength of the receive signal.
0dB
AUTO
-22.5dB
-7.5dB
-15dB
8) RX SENSITIVITY
Selects the desired receiver sensitivity setting. The factory default is NORMAL which is adequate for most applications. The extended setting should be
used only in applications where the NORMAL setting will not suffice.
2)Unit, Submenu of 2)Config
The Unit submenu is used to change control port and alarm options.
Operation
Follow standard operating procedure to access the Unit menu items (see Figure 3-12).
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Chapter 3: Operation
Figure 3-12
Configuration Submenu
1)CNTRL PORT
Used to set the unit up as the master or slave on a chain of units, and whether
to initialize a modem and the control port data rate.
1)POSITION - Determines if this TSU LT is at the head of a chain of units (directly connected to the modem or PC). The head of the chain is referred to as
the master unit. Units down the chain are referred to as slaves or a slave unit.
The setting of the Position selection is necessary only when using a modem, in
which case the head unit should be MASTER. For all other cases, select
SLAVE. (The master is in charge for control of the modem.)
Choices - MASTER or SLAVE
2)MODEM INIT - The TSU LT is capable of initializing a modem. This menu
selection is used to perform this initialization and should be selected only
when the TSU LT is serving as the MASTER unit. Prior to modem initialization it should be physically connected to the TSU LT and the power turned on.
At this point, an industry-standard AT command string is used to initialize the
modem. The string is also used following future power-up sequences.
Choices - ENA
DISA
3) DATA RATE - Selects the data rate for the control port. This should be
consistent with all units on a chain and with the modem and/or PC/Proxy
Agent serial port.
Choices - 1200, 2400, 9600
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2)ALARMS
Used to initialize the method by which the control port handles alarm conditions.
1)TRAPS - This setting determines if alarm conditions should automatically
send alarm messages (traps) to the controlling PC/Proxy Agent. The setting
is for this unit, or for slaves if this unit is a master.
Choices - ENA
DISA
For applications where the AUTO Inband selection is not acceptable, Traps
should only be enabled with the Inband selection set to On or Off.
2)OUTPUT - Selects whether the alarm traps (if enabled) are sent directly, or
if the telephone number stored in the TSU LT should be dialed first (industrystandard AT dial command sent to modem).
Choices - DIRECT or DIAL
3)TEL NUM - This is the telephone number which is dialed to obtain alarm
traps. The string can be up to 20 characters in length and is terminated with a
semicolon (;) as the last character. A colon (:) character is used to represent a
pause in the dial string.
Example: Number 9:5551212; would dial 9, pause momentarily and then send
5551212. This pause could be necessary to access an outside line from a PBX,
etc.
When editing a specific character, the arrows are used to scroll from 0 to 9,
then colon (:) and semicolon (;). The new telephone number is entered into the
TSU LT only upon pressing Enter after typing the semicolon.
Choices - 20 digits (0-9, :, and ;)
The typed digits are accepted only after pressing Enter.
3)Port, Submenu of 2)Config
The menu item PORT is used to select and then to configure the parameters
associated with the V.35.
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Chapter 3: Operation
1)RATE 56/64
This sets the base rate of the interface. The actual data rate depends on the
number of DS0s assigned to the Nx port. The DTE data rate vs. the number of
DS0s appears in the appendix DTE Data Rate Chart.
Choices - 56K or 64K
2)CHANNELS
This sets the unit to use alternate or contiguous channels in the T1 data stream.
If more than 12 channels are used, then contiguous must be used. If not, then
alternate channels may be used to meet pulse density requirements (only necessary for Nx 64 without B8ZS). If other than a private network, the carrier
must be notified of this choice.
Choices - ALT (alternate) or CONT (continue)
3)DTE TX CLK
Controls the clock used by the TSU LT to accept the transmit (TX) data from
the DTE. Most applications will allow for this to be set to INTERNAL. If the
interface cable is long (causing a phase shift in the data) the clock can be selected as INT/INV (Internal/Inverted). This switches the phase of the clock
which should compensate for a long cable. The factory default setting for this
option is AUTO. The AUTO DTE TX CLK setting will allow the TSU LT to automatically detect the delay from the DTE device to the TSU LT and set the
proper phase of the clock. This feature will automatically select between the
INTERNAL and INT-INV settings. If the DTE provides a clock with TX data,
the clock selection is set to EXTERNAL. The TSU LT will depend on an externally supplied clock to accept the TX data.
Choices - INTERNAL, INT-INV, EXTERNAL, or AUTO
4)START CHAN
Used to select the channel in which the T1 stream will start. The setting must
be consistent with carrier if using a public network.
Choices - 01 through 24
5)# OF CHAN
Used to select the number of DS0s (channels) that are to be used. The corresponding DTE rate will be this number times 56K or 64K, depending on Port
Option number 1.
Choices - 01 through 24
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6)DATA
Used to control the inverting of the DTE data. This inversion can be useful
when operating with an HDLC protocol. Often used as a means to ensure ones
(1s) density. TSU LTs on both ends must have identical option settings.
Choices - NORMAL or INVERT
7)CTS
Used to control characteristics of CTS.
Choices - NORMAL (see Table 3-A) or FORCE ON
8)DCD
Data Carrier Detect - Indicates to the DTE when a valid signal is being received at the Network Interface.
Choices - NORMAL (see Table 3-A) or FORCE ON
9)DSR
Data Set Ready - This signal indicates to the DTE when the DCE is turned ON
and ready for operations.
Choices - NORMAL (see Table 3-A) or FORCE ON
NORMAL MODE OPERATION
Conditions which cause the Port Control Signals to be deactivated
V.54
511 TST
NO DS0
SIGNAL
RTS
SELF TEST
NETWK TEST
NETWORK
LOOP BK
ON
MAPPED
ACTIVE
ACTIVE
ALARM
CTS
Follows
OFF
DCD
—
—
DSR
—
OFF
Where “ — “ = don’t care
OFF
—
OFF
OFF
OFF
OFF
OFF
—
OFF
OFF
OFF
OFF
OFF
OFF
—
Table 3-A
Normal Mode Operation
10)INBAND
Inband Configuration Channel - Used to enable/disable an 8 kbps remote
configuration channel (see Figure 3-5). When this option is set to ON, the first
DS0 occupied operates in 56K mode and the DTE clock rate is reduced by 8
kbps. The TSU LT uses this 8 kbps channel to send and receive configuration
data across a T1 span. As shown in Figure 3-14, this allows the PC connected
to the chain-in port on TSU LT A to monitor/configure both TSU LT A and B.
This feature is useful when FDL connectivity is not available across the T1
span.
61202.060L2-1
TSU LT User Manual
39
Chapter 3: Operation
The 8 kbps channel is only taken out of the first DS0. If two 64K DS0s are
mapped, the DTE rate would be 120 kbps instead of 128 kbps. This menu option can also be set to AUTO which activates the Inband Channel only when
commands are sent from T-Watch to the remote unit (TSU LT B in Figure 3-13).
If no T-Watch activity is detected for 10 minutes, the Inband Channel is deactivated.
T-WATCH
TSU A
TSU B
CHAIN IN
NETWORK
Figure 3-13
Inband Remote Configuration
3)UTIL
Purpose
The utility menu is used to view and to set system parameters. See Figure 314. This includes setting the time and date and resetting all parameters to factory values or to re-initialize the unit. This menu is also used to view the unit’s
software revision and the unit ID setting.
40
TSU LT User Manual
61202.060L2-1
Chapter 3: Operation
TIME: HH:MM:SS
1) TIME/DATE
DATE: MM/DD/YY
2) SOFTWARE REV
Displays current
software revision
3) UTIL
3) REINIT UNIT
4) ADDRESS
5) SET PASSCODE
(Returns all configurations to
factory settings)
6) FACT RESTORE
Figure 3-14
Utility Menu
1)Time/Date, Submenu of 3)Util
This menu option is used to view or to edit the current time and date. The time
and date are maintained during power off conditions (see Figure 3-15).
Figure 3-15
Time/Date Screen
Keystroke Summary for Editing Time/Date
Pressing Enter after any numeric change always records the entry and moves
to the next editing position. If Enter is pressed at the editing position without
making any change, the cursor moves to the next editing position. The Up and
Down arrows will also move the cursor to different fields to edit. Pressing
Cancel at any time can be used to end the editing process.
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41
Chapter 3: Operation
2)Software Rev, Submenu of 3)Util
Use the Software Revision submenu to access the display of the current software revision level. This information is required when requesting assistance
from ADTRAN Customer Service or when updates are needed.
3)Reinit Unit, Submenu of 3)Util
Reinit Unit submenu is used to re-initialize the unit. This menu item is not
used to restore the factory default settings for all parameters.
4)Address, Submenu of 3)Util
This submenu is used to access the current Unit Address setting. Unit identification numbers must be between 000 and 256.
Figure 3-16
Address Screen
5)Set Passcode, Submenu of 3)Util
Allows a passcode to be added, changed, or deleted.
6)Fact Restore, Submenu of 3)Util
The Factory Restore submenu is used to restore the factory default setting for
all unit parameters. This restores all parameters to the factory settings.
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TSU LT User Manual
61202.060L2-1
Chapter 3: Operation
4)TEST
Purpose
The Test menu is used to initiate different types of tests of the unit and to view
test results (see Figure 3-17). Test results are displayed in the LCD window.
The menu contains three sub-items.
The execution of tests will disrupt some of the normal operation. See individual menu
items concerning tests before executing.
NO LOOPBACK
1) LOCAL LOOPBK
LINE ON
NO LOOPBACK
PAYLOAD ON
V.54 INBAND PLB
2) REMOTE LOOPBK
ANSI FDL LLB
1) NETWORK TESTS
AT&T INBAND LLB
3) TEST PATTERN
4) TEST
NO PATTERN
ANSI FDL PLB
1:8 ALL DS0s
AT&T PLB
511 ACT. DS0s
ALL ZEROS
ALL ONES
4) CLR ERRS (and error display)
5) INSERT 511 ERRRORS
2) RUN SELFTEST
3) PORT TESTS
(Displays results)
1) DTE LOOPBK: OFF
2) DATA LOOPBK: OFF
Figure 3-17
Complete Test Menu
61202.060L2-1
TSU LT User Manual
43
Chapter 3: Operation
1)Network Tests, Submenu of 4)Test
Network tests are used to control the activation of loopbacks and the initiation
of data test patterns.
The network tests are run on the network interface (NI). Three different test
configurations can be selected to determine the type of loopback and the pattern to run. Test results are displayed in the LCD window.
Figure 3-18
Local Loopback Screen
1)LOCAL LOOPBCK
There are three available choices for setting the local loopback:
No Loopback
Deactivates the loopback
Line On
Activates the line loopback
Payload On
Activates the payload loopback
2)REMOTE LOOPBK
Activates the same loopbacks as the LOCAL but at the far end. This uses either
the inband loopup code as specified by AT&T 62411 for line loopback (ATT InBand LLB), or the FDL as specified in ANSI T1.403 for payload and line loopback codes. An FDL (formerly TABS) maintenance message corresponding to
AT&T TR54016 can be used for payload loopback as well.
44
No Loopback
Deactivates the loopback
V.54 Inband PLB
Indicates inband transmission of V.54 loopup
pattern in channels occupied by DTE data only.
This choice should be used for public fractional
network.
TSU LT User Manual
61202.060L2-1
Chapter 3: Operation
AT&T Inband
LLB
Activates the line loopback using inband code.
AT&T Inband
LLB
Activates the line loopback using inband code.
ANSI FDL LLB
Initiates the transmission of an FDL line loop-up
code toward the far end.
AT&T PLB
Indicates the transmission of the PLB maintenance on the FDL.
Only V.54 loopbacks can be used with fractional T1 since the full T1 stream including
the FDL is not transported to the far end (unless it is a private network).
3)TEST PATTERN
Sets the pattern for the test and initiates the transmission of the pattern. There
are four patterns available. The test is terminated by selecting NO PATTERN.
1:8 ALL DS0s
Generates a 1 in 8 pattern in all DS0s
511 Active DS0s
Generates a 511 test pattern and inserts the pattern into currently active channels
All Zeros
Generates an all zero's pattern in every channel
All Ones
Generates an all ones pattern in every channel
4)CLR ERRORS
Accomplishes two functions. First, it clears out the 511 error total when Enter
is pressed. Second, it displays a total of the 511 errors. If 511 errors are being
received, the display is updated accordingly. See Figure 3-19.
Figure 3-19
Clear Errors Screen
This menu function is very useful for testing end-to-end integrity of the net61202.060L2-1
TSU LT User Manual
45
Chapter 3: Operation
work. First loop up the far end TSU LT. Then send a 511 pattern from the local
TSU LT. The CLR ERRORS screen can then be used to determine if the link is
functioning properly by verifying that no errors are being counted.
5)INSERT 511 ERRORS
When running a 511 pattern test, press the Enter key to insert an error into the
511 pattern.
2)Run Selftest, Submenu of 4)Test
This menu selection is used to execute an internal self test. This is the same self
test that is performed automatically at power up. The results of the self tests
are displayed in the LCD. Upon invoking the command the LCD displays INITIALIZING and test failures are displayed in the LCD window (see Figure 320). To initialize a self test, proceed with the following steps:
1.
2.
3.
4.
RAM tests; EPROM checksum
On board data path; sending a known test pattern through an on-board
loop
Front panel LED verification
Phase lock loop verify
If a failure is detected, note the failure number prior to contacting ADTRAN
Technical Support.
The execution of Self Test disrupts normal data flow and prevents remote communication until the self test is completed (approximately five seconds).
Figure 3-20
Self Test Results Screen
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TSU LT User Manual
61202.060L2-1
Chapter 3: Operation
3)Port Tests, Submenu of 4)Test
Port Tests are used to control the activation of a DTE loopback. This test loops
data received at the V.35 interface back towards the DTE (see Figure 21).
Figure 3-21
Loopback Setting Screen
61202.060L2-1
TSU LT User Manual
47
Chapter 3: Operation
48
TSU LT User Manual
61202.060L2-1
Chapter 4
Example Operations
TESTING EXAMPLE
Prior to actually using the TSU LT to pass data, it is recommended to run tests
on the circuit. Testing consists of sending a test pattern from end-to-end and
checking for errors in the pattern. There are two types of tests used to accomplish this:
•
•
Send the pattern from one end and loop back the far end.
Send the pattern from both ends and check at both ends.
FAR END LOOPED BACK TEST
Two types of tests can be executed with the far end looped. The first is a check
of the network and the network interfaces at both ends (511). The second is a
check of the DTE port.
Network Interface Test
The Network Interface Test can be run with any channel setup because the 511
pattern is always sent in the occupied channels. Select Test from the Main
menu (see Figure 4-1).
Figure 4-1
Main Menu 4)TEST Selected
61202.060L2-1
TSU LT User Manual
49
Chapter 4: Example Operations
Use:
Press:
Results:
the arrows to place the cursor on 4)TEST
ENTER to select
display of the first two Test submenu items (see Figure 4-2)
Figure 4-2
Test Menu with NETWORK TESTS Selected
Use:
Press:
Press:
Results:
the arrows to place the cursor on 1)NETWORK
TESTS
ENTER to select
ENTER again to enter the Network Test menu
beginning display of the submenu items.; each menu
item can be selected with the Up and Down arrows
The Local Loopback test menu is shown in Figure 4-3.
Figure 4-3
Local Loopback Test Menu
The options this menu offers are:
•
•
•
Line On
Payload On
No Loopback
The Remote Loopback test menu is shown in Figure 4-4.
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TSU LT User Manual
61202.060L2-1
Chapter 4: Example Operations
Figure 4-4
Remote Loopback Test Menu
The options the Remote Loopback menu offers are:
•
•
•
•
•
•
No Loopback
V.54 Inband PLB
ANSI FDL LLB
AT&T Inband LLB
ANSI FDL PLB
AT&T FDL PLB
The Test Pattern screen is shown in Figure 4-5.
Figure 4-5
Test Pattern Screen
The options available for the Test Pattern Screen are:
•
•
•
•
•
61202.060L2-1
No Pattern
1:8 all DS0s
511 Active DS0s
All Zeros
All Ones
TSU LT User Manual
51
Chapter 4: Example Operations
Use:
Press:
Use:
the arrows to place the cursor on 2)REMOTE LOOPBK
ENTER to select
the Up and Down arrows to set PAYLOAD in data
the field. (Must use V.54 Inband PLB for Fractional
T1 on Public Networks.)
Press:
Results:
Enter to activate a Remote Payload Loopback
This initiates the transmission of a loopup code toward the far end.
When completed
Use:
Press:
Use:
Press:
Results:
the arrows or the number 3 to select 3)TEST PATTERN
Enter to activate the TEST PATTERN submenu
the arrows to select 511 ACT. DS0s
Enter to activate the selection
the TSU LT always checks for 511 errors. The results
of this check are shown under submenu item 4 (see
Figure 4-6).
Figure 4-6
Clear Errors Screen
When through viewing the results
Press:
52
Cancel to return to submenu item 3)TEST PATTERN
and select NO PATTERN to terminate the test and the
511 pattern generation. The far end remains in loopback until the network REMOTE LOOPBK is set to
NO LOOPBACK under submenu item 2)REMOTE
LOOPBK.
TSU LT User Manual
61202.060L2-1
Appendix A
TSU LT Menu Tree
The complete menu tree for theTSU LT is provided in Figure A-1.
61202.060L2-1
TSU LT User Manual
53
Appendix A: TSU LT Menu Tree
RESET PERF CNTRS
SES
ES
% AV
%EF
CVs
1) NI PERF RPTS
2) CURR ERR/ALM
1) STATUS
LOSS OF SIGNAL
AIS ALARM
OUT OF FRAME
YELLOW ALARM
RED ALARM
CODE VIOLATIONS
BIPOLAR VIOL
FRAME BIT ERRORS
PLL ALARM
CLEAR HISTORY
LOSS OF SIGNAL
AIS ALARM
OUT OF FRAME
YELLOW ALARM
RED ALARM
CODE VIOLATIONS
BIPOLAR VIOLATIONS
FRAME BIT ERRORS
PLL ALARM
3) ERR/ALM HIST
1) NETWORK (NI)
1) POSITION
2)MODEM INIT
3)DATA RATE
1) CNTRL PORT
2) UNIT
2) CONFIG
MAIN MENU
1)TRAPS
2)OUTPUT
3)TEL NUM
2) ALARMS
3) PORT
1) TIME/DATE
TIME: HH:MM:SS
DATE: MM/DD/YY
(Displays current
software revision)
2) SOFTWARE REV
3) UTIL
1)FORMAT
2)CODE
3)YEL ALRM
4)XMIT PRM
5)CLOCK SOURCE
6)BIT STUFFING
7)SET LBO
8)RX SENSITIVITY
1)RATE 56/64
2)CHANNELS
3)DTE TX CLOCK
4)START CHAN
5)# OF CHAN
6)DATA
7)CTS
8)DCD
9)DSR
10)INBAND
3)REINIT UNIT
4)ADDRESS
5)SET PASSCODE
6)FACT RESTORE
(Returns all configurations
to factory settings)
1) LOCAL LOOPBK
2) REMOTE LOOPBK
1) NETWORK TESTS
3) TEST PATTERN
4) TEST
4)CLR ERRS
NO LOOPBACK
LINE ON
PAYLOAD ON
NO PATTERN
1:8 ALL DS0s
511 ACT. DS0s
ALL ZEROS
ALL ONES
NO LOOPBACK
V.54 INBAND PLB
ANSI FDL LLB
AT&T INBAND LLB
ANSI FDL PBL
AT&T PBL
(and error display)
5)INSERT 511 ERRORS
2) RUN SELFTEST
3) PORT TESTS
54
(Displays Results)
1)DTE LOOPBK: OFF
2)DATA LOOPBK: OFF
TSU LT User Manual
Figure A-1
TSU LT Menu Tree
61202.060L2-1
Appendix B
DTE Data Rate Chart
The DTE data rate chart is shown in Table B-A.
Table B-A
DTE Data Rate vs. DS0s
# OF DS0s (N) DTE RATE=56K DTE RATE=64K
61202.060L2-1
N=1
56K
64K
N=2
112K
128K
N=3
168K
192K
N=4
224K
256K
N=5
280K
320K
N=6
336K
384K
N=7
392K
448K
N=8
448K
512K
N=9
504K
576K
N=10
560K
640K
N=11
616K
704K
N=12
672K
768K
N=13
728K
832K
N=14
784K
896K
N=15
840K
960K
N=16
896K
1024K
N=17
952K
1088K
N=18
1008K
1152K
N=19
1064K
1216K
TSU LT User Manual
55
Appendix A: DTE Data Rate Charts
Table B-A
DTE Data Rate vs. DS0s
56
N=20
1120K
1280K
N=21
1176K
1344K
N=22
1232K
1408K
N=23
1288K
1472K
N=24
1344K
1536K
TSU LT User Manual
61202.060L2-1
Acronyms
AIS..................................................Alarm Indication Signal
ALM ...............................................Alarm
AMI ................................................Alternate Mark Inversion
ANSI ..............................................American National Standards Institute
AV...................................................Available Seconds
B8ZS ...............................................Bipolar 8 Zero Suppression
BPV ................................................Bipolar Violation
CHAN ............................................Channel
CLK ................................................Clock
CLR.................................................Clear
CNTRL...........................................Control
CONFIG ........................................Configuration
CRC ................................................Cyclic Redundancy Check
CS (CTS)........................................Clear to Send
CSU/DSU ......................................Channel Service Unit/Data Service Unit
CURR ERR /ALM ........................Current Error/Alarm
CVs .................................................Code Violations
dB....................................................Decibels
DDS................................................Digital Data Service
DISA ..............................................Disable
DSR ................................................Data Set Ready
DS0 .................................................Digital Signal, level zero
DS1 .................................................Digital Signal, level one
DTE ................................................Data Terminal Equipment
EF ....................................................Error Free
ENA................................................Enable
EPROM..........................................Erasable Programmable Read Only Memory
ERR.................................................Error
ERR/ALM HIST...........................Error/Alarm History
ESF..................................................Extended Superframe Format
ES....................................................Errored Seconds
FDL.................................................Facility Data Link
FT1..................................................Fractional T1
HDLC.............................................High-level Data Link Control
ID....................................................Identification
INT .................................................Internal
INT/INV ........................................Internal/Invert
IXC..................................................Inter-exchange Carrier
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TSU LT User Manual
57
Acronyms
kbps................................................ Kilo Bits Per Second
LAN................................................ Local Area Network
LBO ................................................ Line Build Out
LCD ................................................ Liquid Crystal Display
LEC................................................. Local Exchange Carrier
LLB ................................................. Line Loopback
LOS/OOF ...................................... Loss of Signal/Out of Frame
Mbps .............................................. Mega Bits Per Second
NI.................................................... Network Interface
NI PERF......................................... Network Interface Performance
NI PERF RPTS ............................. Network Interface Performance Reports
OSC ................................................ Oscilliator
PC ................................................... Personal Computer
PLB ................................................. Payload Loopback
PLL ................................................. Phase Lock Loop
PRM ............................................... Performance Report Message
POP ................................................ Point of Presence
PWR ............................................... Power
RAM............................................... Random Access Memory
REV ................................................ Revision
RD .................................................. Receive Data
REINIT .......................................... Reinitialize
RMA............................................... Return Material Authorization
RS (RTS)........................................ Request to Send
RX ................................................... Receiver
SES ................................................. Severely Errored Seconds
SF .................................................... Superframe Format
TEL NUM...................................... Telephone Number
TD .................................................. Tranmit Data
TX (XMIT)..................................... Transmit
UTIL............................................... Utilities
58
TSU LT User Manual
61202.060L2-1
Index
Symbols
# of chan
%AV 30
%EF 30
38
Numerics
1-8
pattern 13
511 pattern 13
A
acronyms 57
address 27, 42
AIS alarm 31
alarms 37
all ones 13
all zeros 13
ALM 22
AMI 34
AMP# 555164-2 16, 18
AMP# 92-4883-3-1 19
application 13
arrows 23
ASP# 555164-2 17
AUTO 34
B
B8ZS 34
bipolar violations 31
bit errors 31
61202.060L2-1
bit stuffing 35
C
cancel 22
chain port output 7
chain-in
pin assignments 17
chain-out
pin assignments 18
channels 38
clear to send 39
clock source 35
clock sources 8
CLR ERRORS 45
CNTRL PORT 36
code 34
code violations 31
config 27, 32
configuration menu 27, 32
contents of package 15
control 7
control port input 6
control-in
pin assignments 17
CS 22
CURR ERR/ALM 27, 30
customer service 14
CVs 30
D
D4 34
data 39
TSU LT User Manual
59
Index
data carrier detect 39
data field 23
data loopback 11
data rate chart 55
data set ready 39
DCD 39
description 2
display field 23
DSR 39
DTE
data rate chart 55
data rate vs. DS0s 55
interface loopback 12
loopback 12
timing 9, 35
DTE TX CLK 38
DTS 39
E
enter 22
ERR 22
ERR/ALM HIST 27
ERR/ALM history 32
ES 30
ESF 34
example operations 49
exiting menus 25
F
fact restore 28, 42
factory settings
restore 42
far end looped back test 49
features 5
format 34
fractional T1 2
front panel 7, 21
functional description 2
60
I
inband 39
initialization
power up 20
input
control port 6
installing
TSU LT 15
interfaces 5
NI 6
Nx56/64 6
TSU LT 6
internal timing 9, 35
introduction 1
L
LCD 22
LED
ALM 22
CS 22
ERR 22
PWR 22
RD 22
RS 22
TD 22
TEST 22
line loopback 11
liquid crystal display 22
local loopback 44
loopback
data 11
DTE 12
DTE interface 12
line 11
local 44
network 11
payload 11
remote 44
tests 11
TSU LT User Manual
61202.060L2-1
Index
loss of signal 31
O
M
operation 21
out of frame 31
output 37
chain port 7
overview
T1/FT1 1
TSU LT 2
management from PC 7
menu
config 27
configuration 32
status 26, 29
test 28, 43
util 27
utility 40
menu operation 23
example 23
menu structure 25
methods of control 7
P
N
network
pin assignments 16
timing 35
Network (NI) 27
network (NI) 33
network interface 6
network interface performance reports
29
network interface test 49
network jack 16
network loopbacks 11
network tests 28, 44
network timing 8
NI 6
NI PERF REPORTS 26
NI PERF RPTS 29
normal mode operation 39
Nx56/64 serial interface 6
Nx56/64K DTE
pin assignments 19
61202.060L2-1
passcode 42
set 28
password 42
set 28
pattern
1-8 13
511 13
all ones 13
all zeros 13
generation 13
payload loopback 11
PC management 7
pin assignments
chain-in 17
chain-out 18
control-in 17
network 16
Nx56/64K DTE 19
PLL alarm 31
port 37
port tests 28, 47
power connection 15
power up
self test 20
power-up 20
primary V.35 pin assignments 19
PWR 22
TSU LT User Manual
61
Index
R
rate 56/64 38
RD 22
red alarm 31
reinit unit 27, 42
remote loopback 44
restore factory settings 28,
RJ-48 18
RJ-48C 16
RS 22
RS-232 17
run self test 28
run selftest 46
RX sensitivity 35
S
self test 10
power up 20
run 28
selftest 46
SES 30
set LBO 35
set passcode 28, 42
setting the data field 24
settings
restore 42
shipping contents 15
software rev 27, 42
start chan 38
status menu 26, 29
T
T1
overview 1
service offerings 1
42
test 10
far end loopbacked 49
loopback 11
self 10
test menu 28, 43
test pattern 45
testing
power up 20
tests
examples 49
network 28
network interface 49
port 28, 47
sefftest 46
self test 28
time/date 27, 41
timing
DTE 9, 35
internal 9, 35
network 8, 35
traps 37
TSU LT
installing 15
interfaces 6
main menu 26
overview 2
packing list 15
TSU LT clock sources 8
TSU LT testing 10
T-Watch Pro 7
U
unit 27, 35
up/down arrows 22
util 27, 40
utility menu 27, 40
TD 22
tel num 37
TEST 22
62
TSU LT User Manual
61202.060L2-1
Index
V
V.35 19
viewing display-only fields 25
W
warranty 14
wiring 16
X
XMIT ALRM 34
Y
YEL ALRM 34
yellow alarm 31
61202.060L2-1
TSU LT User Manual
63
Index
64
TSU LT User Manual
61202.060L2-1
Product Support Information
Presales Inquiries and Applications Support
Please contact your local distributor, ADTRAN Applications Engineering, or
ADTRAN Sales:
Applications Engineering
(800) 615-1176
Sales
(800) 827-0807
Post-Sale Support
Please contact your local distributor first. If your local distributor cannot help,
please contact ADTRAN Technical Support and have the unit serial number
available.
Technical Support
(888) 4ADTRAN
Repair and Return
If ADTRAN Technical Support determines that a repair is needed, Technical
Support will coordinate with the Return Material Authorization (RMA) department to issue an RMA number. For information regarding equipment
currently in house or possible fees associated with repair, contact RMA directly at the following number:
RMA Department
(205) 963-8722
Identify the RMA number clearly on the package (below address), and return
to the following address:
ADTRAN, Inc.
RMA Department
901 Explorer Boulevard
Huntsville, Alabama 35806
RMA # _____________
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