ADTRAN | TRI-R/ENCASED W/METAL ENCLOSURE TOTAL REACH ISDN REMOTE ENCASED UNIT INSTALLATION/MAINTENANCE | Owner Manual | Adtran TRI-R/ENCASED W/METAL ENCLOSURE TOTAL REACH ISDN REMOTE ENCASED UNIT INSTALLATION/MAINTENANCE Owner manual

Adtran TRI-R/ENCASED W/METAL ENCLOSURE TOTAL REACH ISDN REMOTE ENCASED UNIT INSTALLATION/MAINTENANCE Owner manual
Section 64212083CASE-5
Issue 2, October 1998
CLEI Code #NDMMFK01_ _
PRACTICES
TRI-R/ENCASED W/METAL ENCLOSURE
TOTAL REACH ISDN REMOTE ENCASED UNIT
INSTALLATION/MAINTENANCE
CONTENTS
1. GENERAL ............................................................. 1
2. INSTALLATION .................................................... 2
3. TESTING................................................................ 7
4. SPECIFICATIONS ................................................. 7
5. MAINTENANCE ................................................... 7
6. WARRANTY AND CUSTOMER SERVICE ........ 7
FIGURES
Figure 1. TRI-R/Encased w/Metal Enclosure ............2
Figure 2. 1st Generation to 2nd Generation
Interoperability .......................................... 3
Figure 3. TRI-R/Encased Label .................................5
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
TABLES
Front Panel Indicators .................................. 4
20 kHz vs 40 kHz Loop Loss Conversion ... 6
TRI-Interface Deployment Guidelines ........ 6
Cable Loss Constants (PIC @ 70°F) ........... 6
U-Interface Deployment Guidelines ............ 6
Specifications ............................................... 8
1. GENERAL
This practice provides installation and maintenance
procedures for the ADTRAN Low Voltage Total
Reach ISDN Remote Encased mounted in a protective
metal enclosure (TRI-R/Encased w/Metal Enclosure).
Figure 1 is an illustration of the TRI-R/Encased w/
Metal Enclosure.
Revision History
This Installation and Maintenance Practice has been
reissued to include the following information and
changes:
• Changes to Figure 1. TRI-R/Encased w/Metal
Enclosure, illustrating the location of the frame
ground
64212083CASE-5B
Trademarks:
Features
Identical in fit, form, and function, two part numbers
have been assigned to allow for account and service
code variances of the local exchange carriers. The
features for the 4212083CASE and 4212083CASE#A
include:
• Meets all Layer 1 requirements for the ISDN
2B1Q U-interface as specified in ANSI
T1.601-1992
• Provides 30.5 kft nominal range on mixed gauge
wire via the Total Reach ISDN (TRI) interface
• Provides 18 kft nominal range on mixed gauge
wire via the U-interface
• Monitors performance of the Layer 1 facility as
specified in TR-NWT-000397 and
TR-TSY000829
• Records 8 hours of performance history, as
specified by TR-NWT-000829
• Responds to eight ISDN BRA National Standard
eoc messages including B1, B2, and 2B+D
loopbacks
• Protects against lightning and power cross in
compliance with GR-1089-CORE
• Span powered by the Total Reach ISDN-Central
Office unit
• Compatible with –130 and –190 VDC Central
Office units
General Description
The TRI-R/Encased w/Metal Enclosure is a sealed
module mounted in a metal enclosure allowing
deployment at any above ground location such as on a
customer’s premises, mounted on a pole or inside a
remote terminal cabinet, or in a telco wiring closet.
The interconnect to the network and customer’s NT1
is made using the 18 in. long interconnect cable. The
cable is made up of 22 AWG solid conductor, and
provides spade terminals for wiring to terminal blocks
or station protectors.
Any brand names and
product names
included in this documentIssue
are trademarks,
Section
64212083CASE-5,
2 registered trademarks, or trade names of
their respective holders.
1
Total Reach
N
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1
T
R
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B
A
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ISDN
A
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REMOTE UNIT
1212083L2
TELEPHONE
OPERATING
EQUIPMENT
CONNECTIONS
NT1-SUBSCRIBER
MODULE
( U-INTERFACE )
TIP - ORANGE/WHITE
RING - ORANGE
DSL PROTECTOR
MODULE
( TRI-INTERFACE )
GROUND - GREEN
TIP - BLUE/WHITE
RING - BLUE
This TRI-R unit interconnects to the central office ADTRAN TRI-C unit,
part number 1212082L1, or Total Reach equivalent.
4212083CASE
BLUE/WHITE
BLUE
TIP
RING
GREEN
TRI
GROUND
ORANGE/WHITE
ORANGE
TIP
RING
NTI
Frame Ground
18 inches
Figure 1. TRI-R/Encased w/Metal Enclosure
The TRI-R/Encased, in conjunction with the Central
Office card (TRI-C), allows the transparent transport
of Basic Rate ISDN (BRI) service to the customer
premises at distances up to 30.5 kft over a single
twisted pair of mixed gauge wire.
at 135 ohms termination. This is based on –44.2 dBm
of 2B1Q Near End Crosstalk (NEXT) as defined in
ANSI TI.601 (typically referred to as 0 dB margin).
Refer to Deployment Guidelines for additional
information.
The TRI-R/Encased restores the 2B+D data and Layer
1 embedded operations channel (eoc) information
from the Total Reach ISDN interface, converting it to
the 2B1Q standard U-interface line code for transport
to the customer’s NT1/TA.
The Low Power T400 TRI-R is span powered by –130
VDC maximum from the multiple Low Power TRI-C
products, or by –190 VDC maximum from the T400
TRI-C, P/N 1210082LI, CLEI DDRPLKCIAA (see
Figure 2). This allows the TRI-R to be located near or
at the customer’s premises. The TRI-R converts the
span-powered input to provide operation voltages for
the TRI-R and provide sealing current for the
customer’s NT1/TA.
The TRI-R/Encased makes use of ADTRAN’s Simple
Coded Pulse Amplitude Modulation (SC PAM) line
coding technology to extend the service range of
ISDN without requiring the use of current mid-span
U-Repeater technology. SC PAM is a full-duplex,
multilevel encoding scheme that uses bandwidth
reduction and improved adaptive equalization to
transparently extend the ISDN Digital Subscriber Line
(DSL) well beyond the current serving range of ISDN.
The Total Reach ISDN system extends the DSL
serving range up to 52 dB when measured at 20 kHz
2
2. INSTALLATION
CAUTION
This equipment contains static sensitive
components. Be sure proper electrostatic
discharge procedures are followed before
handling/installing the equipment.
Section 64212083CASE-5, Issue 2
64212083CASE-5B
1st Generation
TRI-C
190 Volts
1210082L1
19
2nd Generation
TRI-C
0
Vo
lts
130 Volts
1102182L1
1152082L1
1152182L1
1212082L1
TRI-R
1210083L1
1210083L2
4210083NID
4210083LID
TRI-R
1212083L1
1212083L2
4212083NID
4212083LID
4212083CASE
Figure 2. 1st Generation to 2nd Generation Interoperability
After unpacking the unit, immediately inspect it for
possible shipping damage. If damage is discovered,
file a claim immediately with the carrier; then contact
ADTRAN Customer Service (see Warranty and
Customer Service).
Mounting
Loosen the 7/16 security bolt and remove the front
cover. Insert two screws (recommend 48 x 1.5-inch)
through the two mounting holes located on the base of
the metal enclosure and attach to the customer’s
residence, pole, or wire closet (see Figure 1).
CAUTION
Up to –190 VDC maximum may be present on
the OSP Cable Pair.
For applications on customer’s residence, the metal
enclosure should be within 12 inches from the
Network Interface Device (NID) to allow for proper
routing of the interconnect cable. Thread the
interconnect cable through the grommet of the metal
enclosure (see Figure 1) and connect the ground wire
(Green) to an approved ground. Connect the TRI
Interface (Blue and Blue/White) to the station
protector module that will be used for the network.
These connections are not sensitive to Tip/Ring
reversal.
64212083CASE-5B
Connect the NT1 Interface (Orange and Orange/
White). These connections are not sensitive to Tip/
Ring reversal. If a customer wiring bridge module
will be used, the module must be an electronic free
module (no 1/2 ringer or RFI). Connection to the
customer module can be made using one of the
following methods:
• Use a separate station protector module using the
wiring post to make the electrical connection
• Use interconnect devices such as ScotchlokTM in
the telco compartment of the NID
For applications that require a pole or cabinet mount,
connections to the drop (TRI-Interface) and station
side (NT1-Interface) should be made using approved
methods (either Scotchlok or a suitable splice
enclosure). For applications in a wiring closet,
connections to the drop (TRI-Interface) and station
side (NT1-Interface) can be made using standard
punch-down blocks, or any other suitable method.
After installation, the TRI-R/Encased will initiate the
training sequences to the TRI-C. Once
synchronization is achieved on the Total Reach
interface, the TRI-R/Encased will then initiate the
training sequences to the customer’s terminal
equipment. The TRI I/F and NT1 I/F LEDs should go
out when synchronization has been achieved on the
TRI-interface and U-interface respectively.
Section 64212083CASE-5, Issue 2
3
After synchronization, if either the TRI I/F or NT1 I/F
LED flashes at a rate of once per second, this indicates
the receipt of Near End Block Errors (NEBES) on the
associated interface. Both LEDs may illuminate
immediately following synchronization of each
interface, but should go OUT within 1 second. An
LED that remains ON, or flashes intermittently,
indicates a possible error condition on the associated
interface, and should be checked before concluding
circuit turn-up.
Once synchronization is complete and all connections
are made, the interface indicates activation using the
ACT LED. The ACT LED will light after successful
exchange of the Activation bit between the customer’s
terminal equipment and the ISDN Switch.
The ACT LED will flash if the activation bit is
received on the U-interface (when NT1 or the
customer’s terminal equipment is providing the
Activation bit), but is not received from the ISDN
Switch on the TRI-interface.
During normal operation, the ACT LED will be ON,
and all other LEDs will be OFF. See Table 1 for
additional LED information and Figure 3 for LED
location.
Upon completion of circuit turn-up, replace the front
cover and tighten the 7/16 security bolt to 20 to 30 inlbs. DO NOT OVERTIGHTEN.
Deployment Guidelines
The Total Reach ISDN system is designed to provide
range extension on single twisted-pair, non-loaded
loops that exceed the typical ISDN deployment range.
The general guidelines require the loop have an
insertion loss of less than 52 dB at 20 kHz, or less
than 61 dB at 40 kHz with 135 ohms driving and
terminating impedances (see Table 2). Table 3
provides recommended guidelines for the Total Reach
ISDN interface. Adherence to these guidelines will
allow general deployment of Total Reach ISDN
without further qualification. If any of the stated
guidelines are exceeded, additional circuit testing will
be required to ensure loop loss and noise levels are not
exceeded.
CAUTION
All load coils must be removed from the
circuit pairs being deployed. Loading coils,
which are used to enhance voice quality on
analog circuits, are designed to pass
frequencies in the lower bandwidth range.
Technologies operating in higher bandwidth
ranges such as DDS, HDSL, or, in this case,
ISDN, will not operate properly if all loading
coils are not removed from the pair.
Specific loss constants and DC loop resistance for
various wire gauges are provided in Table 4. Loop
loss constants (in dB/kft) are provided for 20 and 40
kHz and can be used to determine the Estimated
Measured Loss (EML) for any local loop. Examples
of maximum loop lengths are provided for each wire
gauge, and are based on 70°F PIC cable, with –44.2
dBm ANSI NEXT. These constants were derived
using the method for determining the insertion loss
with 135 Ohm driving and termination impedances as
Table 1. Front Panel Indicators
Indicator
4
Color
Description
NT1 I/F
Red
ON solid indicates a loss of signal or synchronization with the 2B1Q BRI interface
toward customer's NT1. Flashing once per second indicates receipt of a NEBE from
the 2B1Q BRI interface.
TRI I/F
Red
ON solid indicates a loss of signal or synchronization with the TRI-C unit. Flashing
once per second indicates receipt of a NEBE from the TRI-C unit.
LOOPBACK
Yellow Indicates the TRI-R unit is in a network-commanded test: 1 flash per second for B1
loopback, 2 flashes per second for a B2 loopback, and solid for 2B+D loopback.
ACT
Green
ON solid indicates that the terminal equipment has exchanged ACT bits with the
ISDN switch. Flashing once per second indicates that the ACT bit is being sent
from only the terminal equipment.
Section 64212083CASE-5, Issue 2
64212083CASE-5B
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Total Reach
A
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ISDN
REMOTE UNIT
1212083L2
CONNECTIONS
NT1-SUBSCRIBER
MODULE
( U-INTERFACE )
TIP - ORANGE/WHITE
RING - ORANGE
DSL PROTECTOR
MODULE
( TRI-INTERFACE )
GROUND - GREEN
TIP - BLUE/WHITE
RING - BLUE
This TRI-R unit interconnects to the central office ADTRAN TRI-C unit,
part number 1212082L1, or Total Reach equivalent.
Figure 3. TRI-R/Encased Label
described in Bell Lab Transmission System for
Communications, 1982. The total length of
multigauge cable must yield a loop loss less than or
equal to 52 dB @ 20 kHz or 61 dB @ 40 kHz.
For EML, multiply each section’s loop length in
kilofeet by the appropriate cable loss constant in Table
4 to determine the insertion loss of each section. To
determine the insertion loss for each bridged tap in the
feeder, multiply the length of the bridged tap by 1.32
dB (2.09 for 40 kHz). The maximum loss of each
bridged tap is 4.2 dB, (4.7 dB for 40 kHz), regardless
of length. Assume 250 ft. for Central Office wiring.
For total insertion loss for the loop, add each section’s
insertion loss, the loss due to bridged taps, and loss of
Central Office wiring.
ISDN and the recommended 20 kHz for Total Reach
ISDN. To use, determine the loss in decibels at 40
kHz using current methods and the largest component
cable size (24 or 22 AWG). If the 22 and 24 AWG
components are approximately the same, use the
values associated with 22 AWG. This table should
only be used to provide a rough estimate of the
insertion loss at 20 kHz. A more accurate estimate
can be obtained by determining the exact cable
makeup of a loop and applying the cable loss
constants in Table 4.
The U-Interface follows local deployment guidelines
for standard ISDN as specified in ANSI Tl.601 and
shown in Table 5.
Some Loop Deployment Programs provide automatic
loop insertion loss predictions based on 40 kHz for
ISDN 2B1Q. Table 2 provides a conversion estimate
in decibels between insertion loss at 40 kHz for 2B1Q
64212083CASE-5B
Section 64212083CASE-5, Issue 2
5
Table 2. 20 kHz vs 40 kHz Loop Loss
Conversion
Table 3. TRI-Interface Deployment Guidelines
Description
6
20 kHz
(dB)
40 kHz w
/majority 22
AWG (dB)
40 kHz
w/majority 24
AWG (dB)
1
1
1
5
6
6
10
12
12
15
18
18
20
23
24
25
29
30
30
35
36
31
36
38
32
37
39
33
39
40
34
40
41
35
41
42
36
42
44
37
43
45
38
44
46
39
46
47
40
47
48
41
48
50
42
49
51
43
50
52
44
51
53
45
53
55
46
54
56
47
55
57
48
56
58
49
57
59
50
58
61
51
60
62
52
61
63
Value
Maximum Loop Loss @
– 44.2 dBm ANSI NEXT
52 dB @ 20 kHz
or
61 dB @ 40 kHz
Maximum DC resistance
2000 Ω
Maximum single bridged taps
2 kft
Maximum total bridged taps
6 kft
Maximum number bridged taps 3
Table 4. Cable Loss Constants (PIC @ 70°F)
Cable
Gauge
(mm)
Maximum
Loop
Length*
Loss @
20 kHz
per kft
Loss @
40 kHz
per kft
Ohms
per kft
26/0.40
24/0.51
22/0.61
19/0.91
24 kft
33 kft
46 kft
80 kft
2.159 dB
1.586 dB
1.134 dB
0.655 dB
2.721 dB
1.921 dB
1.325 dB
0.770 dB
83
52
32
16
Bridged
Tap
6 kft
1.32 dB
2.09 dB
N/A
* Based on –44.2 dBm ANSI NEXT
Table 5. U-Interface Deployment Guidelines
Description
Value
Maximum Loop Loss @
– 38.2 dBm ANSI NEXT
42 dB @ 40 kHz
Maximum DC resistance
1300 Ω
Maximum single bridged taps
3 kft
Maximum total bridged taps
6 kft
Maximum number bridged
taps
3
Max Noise
– 57 dBm (135 Ω
termination, 50 kb
filter)
Section 64212083CASE-5, Issue 2
64212083CASE-5B
3. TESTING
The TRI-R/Encased responds to eoc loopbacks,
including B 1, B2, and 2B+D. Loopbacks can be
initiated from the ISDN switch, or from any other
upstream network device that affords test access. The
TRI-R/Encased also supports performance monitoring
as described in TR 829 for fault isolation.
4. SPECIFICATIONS
Refer to Table 6 for unit specifications.
5. MAINTENANCE
The TRI-R/Encased requires no routine maintenance
to operate properly.
ADTRAN recommends that repairs not be performed
in the field. Repair services can be obtained by
returning the defective unit to ADTRAN’s Customer
and Product Service Department (CAPS).
6. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within 10
years from the date of shipment if it does not meet its
published specifications or fails while in service (see
ADTRAN Telco Network Equipment Warranty,
Repair, and Return Policy and Procedure document
60000087-IOA).
Contact CAPS prior to returning equipment to
ADTRAN.
For service, CAPS requests, or further information,
contact one of the following numbers:
ADTRAN Technical Support
(800) 726-8663
Standard hours: Monday-Friday, 7am-7pm CST
Emergency hours: 7 days/week, 24 hours/day
ADTRAN Sales
(800) 827-0807
ADTRAN Repair/CAPS
(256) 963-8722
Repair and Return Address
ADTRAN, Inc.
Customer & Product Service (CAPS) Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807
64212083CASE-5B
Section 64212083CASE-5, Issue 2
7
Table 6. Specifications
Two-wire (Customer) Loop Interface
Line
Operating Mode
Data Rate
Signal Format
Transmit Power (rms)
Tx/Rx Impendance
Receiver Sensitivity
Sealing Current
Two-wire
Full-duplex
160 kbps total; 144 kbps available to customer
2B1Q
13 dBm to 14 dBm nominal
135 Ω nominal
42 dB @ 40 kHz with –38.2 dBm of ANSI NEXT
4 to 10 mA depending on loop loss
Total Reach ISDN Interface
Line
Operating Mode
Signal Format
Transmit Power (rms)
Tx/Rx Impendance
Input Power
Receiver Sensitivity
Two-wire
Full-duplex
Simple Coded Pulse Amplitude Modulation (SC PAM)
13 dBm nominal
135 Ω nominal
1.4 W nominal
(–95 to –130 VDC, dependent on loop loss)
52 dB @ 20 kHz with –44.2 dBm of ANSI NEXT
Size
Replacement Module
Metal Enclosure
6 1/4" H x 6 1/4" W x 2"L
7 1/4" H x 6 1/2" W x 1 3/4" L
Weight
Replacement Module
Metal Enclosure
13 oz
3.1 lb
Temperature
Operating
Storage
–40 to 70° C (–40 to 158° F)
–40 to 85° C (–40 to 185° F)
Relative Humidity
Up to 95% non-condensing
8
Section 64212083CASE-5, Issue 2
64212083CASE-5B
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