PatchWorx™ RS232 and V.35 Digital Patching

ADCP-50-322 • Issue 1 • March 2000
PatchWorx™ RS232
and V.35 Digital Patching
User Manual
Content
Page
INTRODUCTION .......................................................................... 1
Revision History ..................................................................... 2
Trademark Information ................................................................ 2
Related Publications .................................................................. 2
Admonishments ..................................................................... 2
General Safety Precautions ............................................................. 3
List of Acronyms and Abbreviations ........................................................ 3
1
2
SYSTEM DESCRIPTION ................................................................ 3
1.1
Signal Interfaces ............................................................... 4
1.2
Chassis ..................................................................... 4
1.3
Patch Modules ................................................................ 4
1.4
Access Modules ............................................................... 5
1.5
Test Modules ................................................................. 6
1.6
Monitor Modules ............................................................... 6
SYSTEM COMPONENTS ................................................................ 7
2.1
3
4
Chassis ..................................................................... 7
2.2
Patch Modules ................................................................ 7
2.3
Access Modules ............................................................... 8
2.4
Test Modules ................................................................. 8
2.5
Monitoring Modules ............................................................. 8
2.6
Power Supplies ................................................................ 8
2.7
Accessories .................................................................. 9
2.7.1
Patch Cords............................................................ 9
2.7.2
Miscellaneous.......................................................... 9
INSTALLATION ...................................................................... 9
OPERATION ........................................................................10
4.1
Monitor Mode .................................................................10
4.2
Patch Mode ..................................................................10
4.3
Test Module ..................................................................11
5
SPECIFICATIONS.....................................................................11
6
PINOUT CONFIGURATIONS ..............................................................11
7
CUSTOMER INFORMATION AND ASSISTANCE .................................................13
INTRODUCTION
This manual provides operating information for the Basic Patch system (Series 4xxx) which
comprise ADC’s PatchWorx series of basic digital patching products. The PatchWorx systems
allow simple, cost effective means to access data circuits for network reconfiguration, service
restoral, noninterruptive line monitoring, and troubleshooting. This manual is intended for
anyone planning, installing, operating, or maintaining a PatchWorx system.
1071227 Rev A
Page 1
© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
Revision History
ISSUE
DATE
Issue 1
03/2000
REASON FOR CHANGE
Original
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.; PatchWorx is a trademark
of ADC Telecommunications, Inc.; Dynatech is a registered trademark of Dynatech Data
Systems; Spectron is a registered trademark of InRange Technologies, Inc.
Related Publications
Listed below are related manuals and their publication numbers. Copies of these publications
can be ordered by contacting the ADC Technical Assistance Center at 1-800-366-3891
(in U.S.A. or Canada) or 952-946-3000, extension 3223 (outside U.S.A. and Canada).
Title/Description
PatchMate EIA-232/V.24, X.21, EIA-530 & V.35 Digital Patching User Manual
Contains installation and operation procedures for EIA-232/V.24, X.21,
EIA-530 and V.35 digital patching and monitoring circuits, including
description of the PatchMate system and its components.
ADCP Number
50-305
Admonishments
Important safety admonishments are used throughout this manual to warn of possible hazards
to persons or equipment. An admonishment identifies a possible hazard and then explains
what may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use
of the triangular alert icon (seen below), and are listed in descending order of severity of
injury or damage and likelihood of occurrence.
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.
Warning: Warning is used to indicate the presence of a hazard that can cause severe
personal injury, death, or substantial property damage if the hazard is not avoided.
Caution: Caution is used to indicate the presence of a hazard that will or can cause minor
personal injury or property damage if the hazard is not avoided.
Page 2
© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
General Safety Precautions
Warning: To prevent electrical shock, never install telephone equipment in a wet location or
during a lightning storm. When installing or modifying telephone lines, disconnect lines on
the network side before working with uninsulated lines or terminals.
Caution: Electronic modules can be damaged by electrostatic discharge (ESD). Before handling
modules, wear an anti-static discharge wrist strap to prevent damage to electronic components.
Place modules in anti-static packing material when transporting or storing. When working on
modules, always place them on an approved anti-static mat that is electrically grounded.
List of Acronyms and Abbreviations
ALM
COM
CTR, CTS
DCD
DCE
DTE
ESD
F/F
F/M
IND
LED
MON
MTBF
MTTR
RTS
RD
TD
1
Alarm
Computer port
Clear To Receive, Clear To Send
Data Carrier Detect
Data Communications Equipment
Data Terminal Equipment
Electrostatic Discharge
Female/Female (connectors)
Female/Male (connectors)
Indicator
Light Emitting Diode
Monitor
Mean Time Between Failures
Mean Time To Repair
Request To Send
Received Data
Transmitted Data
SYSTEM DESCRIPTION
Figures 1 shows a typical configuration of PatchWorx products. Refer to later portions of this
manual for descriptions of specific configurations.
Page 3
© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
C
O
M
P
M
O
D
E
M
M
O
N
TD
RD
RTS
CTS
DSR
CD
TC
RC
DTR
SQR
RI
TCT
LT
P
A
T
C
H
W
O
R
K
13958-A
Figure 1. Typical PatchWorx Patch System
The ADC PatchWorx product line provides a basic, reliable, and cost-effective hardware
approach to system back-up and network monitoring. This basic system is intended for use
where cost or simplicity is a major factor.
The modules in the product line can be obtained with either Dynatech® or Spectron®
patching compatibility.
1.1 Signal Interfaces
The PatchWorx series of products accommodates RS-232/V.24 and V.35 interfaces.
1.2 Chassis
PatchWorx Patch Modules fit in rack mountable chassis, with up to 18 modules to a chassis.
The placement of modules in a chassis depends on the type of chassis being used. RS232/V.24 chassis can have Patch, Access, Test, or Monitoring Modules in slots #1-18. V.35
chassis can have Patch or Access Modules in slots #1-17, Test Modules in slots #1-18, and a
Monitoring Module in slot #18. You can place a Monitoring Module only in slot #18 because
of the required power supply connection. (Slot positions are counted from left to right. Slot #1
is the left-most position and slot #18 is the right-most position.)
1.3 Patch Modules
Each Patch Module has three front-panel patch cavities designated COMP (computer),
MODEM, and MON (monitor). Each module also has two rear ports designated DTE and
DCE. The DTE port is used to attach the circuit from the terminating equipment, such as a
computer, and the DCE port is used to attach the circuit from the communications equipment,
such as a modem.
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
When no patch cords are inserted, the circuit between DCE and DTE is “normal through.”
Inserting a patch cord in the COMP cavity breaks all of the circuit’s leads and provides access
to these leads from the DTE port. Inserting a patch cord in the MODEM cavity breaks all of
the circuit’s leads and provides access to the circuit from the DCE port. The MON cavity
provides access without breaking the circuit. Figure 2 shows a Patch Module block diagram.
COMPUTER
DTE
DB25
CONNECTORS
MODEM
DCE
MONITOR
13949-A
Figure 2. Patch Module Block Diagram
1.4 Access Modules
Each Access Module has two front-panel patch cavities and two rear DB-25 connectors. The
upper front-panel cavity is connected to the upper rear DB-25. The lower front-panel cavity is
connected to the lower rear DB-25. There is no switching mechanism on this module and no
connection between the upper and lower rear connectors (normal through). This module
allows test or other miscellaneous equipment to be terminated within the chassis. Figure 3
shows the Access Module block diagram.
ACCESS 1
TEST
EQUIPMENT
#1
DB25 FEMALE
CONNECTORS
ACCESS 2
TEST
EQUIPMENT
#2
13950-A
Figure 3. Access Module Block Diagram
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
1.5 Test Modules
Test Modules have one patch cavity and two DB-25 connectors. The patch cavity and one of the
DB-25 connectors are on the front panel. The other DB-25 connector is at the rear of the module.
The Test Module brings out the patch cord to both connectors. You can connect test or other
miscellaneous equipment to the connectors. Figure 4 shows the Test Module block diagram.
PORTABLE
TEST
EQUIPMENT
DB25 FEMALE
CONNECTOR
TEST
EQUIPMENT
ACCESS
DB25 FEMALE
CONNECTOR
13951-A
Figure 4. Test Module Block Diagram
1.6 Monitor Modules
Monitoring Modules have a patch cavity on the front panel. The Monitoring Module brings
out the patch cord to a DB-25 connector on the rear of the module
LEDs on the front panel indicate signal activity. The signals that are monitored depend on the
intend interface. Both RS-232/V.24 and V.35 modules have 11 LEDs. See System Components
for more information about the signals that are monitored. Figure 5 shows a block diagram of
a Monitor Module.
STATUS
INDICATORS
MONITOR
ELECTRONICS
POWER FROM
POWER
MODULE
TEST
SWITCH
ACCESS
PORT
TEST
EQUIPMENT
DB25 FEMALE
CONNECTOR
13952-A
Figure 5. Monitor Module Block Diagram
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
2
SYSTEM COMPONENTS
A PatchWorx system consists of an 18-slot chassis and up to 18 selected Patch, Access, Test,
and Monitoring Modules.
In the RS-232/V.24 chassis, modules of all kinds may be inserted in any desired number and
mixture in slots #1–18. The only special requirement is that a Monitoring Module must have a
power supply for its LEDs. The power supply can be Power Module PWPS-4294-0 (110VAC)
or Power Module PWPS-4294-1 (230VAC).
In the V.35 chassis a Monitoring Module, if used, must be inserted in slot #18. The power
supply can be Power Module PWPS-4294-0 (110VAC) or Power Module PWPS-4294-1
(230VAC). A Test Module may be inserted in any of slots #1–18. Patch and Access Modules
may be inserted in any of slots #1-17, but not in slot #18.
2.1 Chassis
MODEL #
DESCRIPTION
PMCH-4004-RM
RS-232/V.24 Chassis with 18 slots
Accommodates up to 18 RS-232/V.24 Patch, Access, Test, and
Monitoring Modules in slots #1-18.
PMCH-4005-RM-FZ*
V.35 Chassis with 18 slots F/F
Has V.35 connectors in the rear. Wired for 18-conductor configuration:
A, B, C, D, E, F, H, J, P, R, S, T, U, V, W, X, Y, and AA. Computer
(DTE) and Modem (DCE) are female connectors. Accommodates up
to 17 V.35 Patch, Access, and Test Modules in slots #1–17 and either
a V.35 Test Module or a V.35 Monitoring Module in slot #18.
PMCH-4005-RM -MZ*
V.35 Chassis with 18 slots F/M
Same as the above, except that Computer (DTE) is a female connector
and Modem (DCE) is a male connector.
* Replace “Z” with: “D” for Dynatech® compatibility, or “S” for Spectron® compatibility.
2.2 Patch Modules
MODEL #
DESCRIPTION
PWM-4010-0Z*
RS-232/V.24 Patch Module F/M
PWM-4010-1Z*
Computer (DTE) is a DB-25 female connector. Modem (DCE) is a DB-25
male connector. Patches 24 leads. Pin 1 common. Used in chassis PMCH4004-RM. Placed in slots #1–18.
RS-232/V.24/V.35 Patch Module F/F
Computer (DTE) and Modem (DCE) are DB-25 female connectors.
Patches 24 leads. Pin 1 common. Used in chassis PMCH-4004-RM,
PMCH-4005-RM-FZ* and PMCH-4005-RM-MZ*. Placed in slots #1–17.
* Replace “Z” with: “D” for Dynatech® compatibility, or “S” for Spectron® compatibility.
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
2.3 Access Modules
MODEL #
DESCRIPTION
PWM-4012-1Z*
RS-232/V.24/V.35 Access Module F/F
Computer (DTE) and Modem (DCE) are DB-25 female connectors. Used in
Chassis PMCH-4004-RM (placed in slots #1–18), and PMCH-4005-RM-FZ*
and PMCH-4005-RM-MZ* (placed in slots #1–17).
Replace “Z” with: “D” for Dynatech® compatibility, or “S” for Spectron® compatibility.
2.4 Test Modules
MODEL #
DESCRIPTION
PWM-4040-0Z*
RS-232/V.24/V.35 Test Module
Brings out the patch cord to a standard DB-25 female connector on the front
and rear of the module. Used in Chassis PMCH-4004-RM, PMCH-4005RM-FZ*, and PMCH-4005-RM-MZ*. Placed in slots #1–18.
Replace “Z” with: “D” for Dynatech® compatibility, or “S” for Spectron® compatibility.
2.5 Monitoring Modules
MODEL #
DESCRIPTION
PWM-4042-0Z*
RS-232/V.24 Monitoring Module with 11 LEDs
Brings out the patch cord to a standard DB-25 female connector on the rear of the
module. LEDs on the front panel monitor the status of 11 RS-232/V.24 signals—
TD, RD, RTS, CTS, DSR, CD, TC, RC, DTR, SQD, and RI. Has a Lamp Test
pushbutton. Used in Chassis PMCH-4004-RM. Placed in slots #1–18. Requires
Power Module PWPS-4294-0, or Power Module PWPS-4294-1.
PWM-4043-0Z*
V.35 Monitoring Module with 11 LEDs
Brings out the patch cord to a standard DB-25 female connector on the rear
of the module. LEDs on the front panel monitor the status of 11 V.35 signals—
TD, RD, RTS, CTS, DSR, CD, TC, RC, DTR, SQD, and RI. Has a Lamp Test
pushbutton. Used in Chassis #4005-RM-FZ* or 4005-RM-MZ* and must be
placed in slot #18. Requires Power Module PWPS-4294-0, Power Module
PWPS-4294-1.
* Replace “Z” with: “D” for Dynatech® compatibility, or “S” for Spectron® compatibility.
2.6 Power Supplies
Each Monitoring Module requires a power supply for its LEDs. The power supply is connected
to the rear of the unit.
MODEL #
DESCRIPTION
PWPS-4294-0
Power Module—115 V ac
PWPS-4294-1
Power Module—230 V ac
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
2.7 Accessories
2.7.1
Patch Cords
Each keyed patch cord features simple insertion with locking. There is connector at both ends
of the Patch Cord, which must be specified when ordering. Patch cords are available in
standard lengths of 2, 4, 6, 8 and 10 feet.
MODEL #
DESCRIPTION
PWPC-4900-XLX*
Patch Cord * X is the jack or connector and L is the length of the cord.
X: Connectors
S: Spectron
D: Dynatech
L: Cord Length
2: 2 feet (61.96 cm)
4: 4 feet (1.22 m)
6: 6 feet (1.83 m)
8: 8 feet (2.44 m)
10: 10 feet (3.05 m)
Example: PWPC-4900-D4D is a 4-foot patch cord with Dynatech style
connectors at each end.
* X is the connector style and L is the length of the cord.
2.7.2
3
Miscellaneous
MODEL #
DESCRIPTION
PWM-4990-00
Blank Panel - Used in the chassis to cover open slots.
INSTALLATION
A step-by-step procedure for installing the Basic or Standard Patch system is described below.
Warning: To prevent electrical shock, never install telephone equipment in a wet location or
during a lightning storm. When installing or modifying telephone lines, disconnect lines on
the network side before working with uninsulated lines or terminals.
Caution: Electronic modules can be damaged by electrostatic discharge (ESD). Before handling
modules, wear an anti-static discharge wrist strap to prevent damage to electronic components.
Place modules in anti-static packing material when transporting or storing. When working on
modules, always place them on an approved anti-static mat that is electrically grounded.
1. Install the Patch, Access, Test, and Monitoring Modules in slots #1-18 of the chassis.
If you are installing modules into an X.21 or V.35 Basic Patch Chassis, remember to
install only a Test Module or a Monitoring Module in slot #18. If you are installing
modules into a Standard Patch Chassis, make sure to install the Monitoring Module in
slot #18. Fasten each module in place with the supplied screws.
2. Place the Chassis in the communication cabinet. Secure the Chassis with four sets of
mounting hardware to the four slots on the ears of the Chassis.
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
3. Connect the Power Module to the connector at the rear of the Monitoring Module, if
required.
4. If you have a monitoring module, press the Lamp Test pushbutton. All LEDs should
light up.
5. Connect each DTE and DCE to the appropriate connector on the rear of the Chassis.
6. If required, connect chassis ground to the chassis ground stud in the rear panel.
4
OPERATION
There are three modes in which the PatchWorx system can work. They are normal, monitor
and patch modes. In the monitor and patch modes, all access connections are made through
the front panel jacks; and in the normal mode, no front panel connections are needed. The
front panel jacks are labeled: top jack—COMP, middle jack—MODEM, and bottom jack—
MON. The COMP and MODEM jacks (i.e., the top and the middle jacks respectively) are
used in the patch mode, and the MON jack (i.e., the bottom jack) is used for the monitor
mode. The monitor/patch modes are discussed in the following paragraphs.
4.1 Monitor Mode
The monitoring function is initiated by inserting a specially designed patch cord connector
into the MON jack. This provides a bridged connection too the circuit, and this connection
induces no interruption of the circuit. Now that the data circuit has been accessed, the other
end of the patch cord can be inserted into a Monitoring Module access jack.
4.2 Patch Mode
The patch mode is used when it is necessary to perform a restoral function on a failed
component, to make a substitution of a different device, or to reroute a communications path.
The patching function is activated by inserting a patch cord into either the COMP or
MODEM jacks. This action splits the circuit and routes the signals through the patch cord.
The other end of the cord can then be inserted into another jack and in so doing, attach a
different device. For example, it has been determined that a particular circuit has a bad
modem. A patch cord is then inserted into the circuit’s COMP jack, and the other end of the
cord is connected to a spare modem’s jack. This patching function has split the original
circuit, rerouted the computer’s signals through the patch cord, and finally connected the spare
modem to the original data communications circuit.
Tandem operation of computers and/or modems is not recommended; and consequently, patch
cords should not be used to connect a COMP jack to another COMP jack or a MODEM jack
to a MODEM jack.
The ADC PatchWorx system requires no operating adjustments; nor does it need preventive or
routine maintenance.
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
4.3 Test Module
When a test module is used, it is connected in the communications line to access test equipment.
This is accomplished by inserting a patch cord between either the MONITOR, COMPUTER or
MODEM patch jacks of a PatchWorx Patch Module and the Test Module Access jack.
5
SPECIFICATIONS
Technical specifications for both the Basic and the Standard Patch systems are shown in Table 1.
Table 1. Technical Specifications
ITEM
SPECIFICATION
Signal Interfaces
RS-232/V.24, V.35.
Protocols
Transparent to all protocols.
Contact Resistance
Maximum in patched or unpatched: 0.5 ohm.
MTTR
Less than 10 minutes.
System MTBF
In excess of 100,000 hours.
Expected Life
Operating Temperature
50,000 operations.
o
o
32–122 F (0–50 C)
(95% Humidity, Non-condensing)
6
Size
RS-232/V.24 Chassis:
19" (48.26 cm) wide u 5.25" (13.33 cm) high u 6" (15.24 cm) deep.
V.35 Chassis:
19" (48.26 cm) wide u 5.25" (13.33 cm) high u 7" (17.78 cm) deep.
Power (required for
Monitoring Modules only)
110VAC or 230VAC @ < 1A
PINOUT CONFIGURATIONS
This appendix provides the PatchWorx system DB-25 to V.35 adapter pinout configurations.
The systems use either Dynatech or Spectron connectors. See Table 2 for the Dynatech pinout
configuration. See Table 3 for the Spectron pinout configuration.
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© 2000, ADC Telecommunications, Inc.
ADCP-50-322 • Issue 1 • March 2000
Table 2. Dynatech: DB-25 to V.35 Pinout Configuration
DB-25
V.35
FUNCTION
1
4
5
6
7
8
9
10
11
12
17
18
19
20
21
22
23
25
A
C
D
E
B
F
R
T
P
S
HH
Y
W
U
AA
H
V
X
SHIELD GROUND
REQUEST TO SEND
CLEAR TO SEND
DATA SET READY
SIGNAL GROUND
DATA CARRIER DETECT
RECEIVE DATA (A)
RECEIVE DATA (B)
TRANSMIT DATA (A)
TRANSMIT DATA (B)
SERIAL CLOCK TRANSMIT (A)
SERIAL CLOCK TRANSMIT EXTERNAL (B)
SERIAL CLOCK TRANSMIT EXTERNAL (A)
SERIAL CLOCK TRANSMIT (B)
DATA TERMINAL READY
SERIAL CLOCK RECEIVE (A)
SERIAL CLOCK RECEIVE (B)
CCITT #
101
105
106
107
102
109
104
104
103
103
114
113
113
114
108.2
115
115
Table 3. Spectron: DB-25 to V.35 Pinout Configuration
DB-25
V.35
FUNCTION
1
2
3
4
5
6
7
8
13
15
16
17
18
20
22
23
24
25
A
P
R
C
D
E
B
F
X
Y
T
V
S
H
J
W
U
AA
SHIELD GROUND
TRANSMIT DATA (A)
RECEIVE DATA (A)
REQUEST TO SEND
CLEAR TO SEND
DATA SET READY
SIGNAL GROUND
DATA CARRIER DETECT
SERIAL CLOCK RECEIVE (B)
SERIAL CLOCK TRANSMIT (A)
RECEIVE DATA (B)
SERIAL CLOCK RECEIVE (A)
TRANSMIT DATA (B)
DATA TERMINAL READY
RING INDICATOR
SERIAL CLOCK TRANSMIT EXTERNAL (B)
SERIAL CLOCK TRANSMIT EXTERNAL (A)
SERIAL CLOCK TRANSMIT (B)
Page 12
© 2000, ADC Telecommunications, Inc.
CCITT #
101
103
104
105
106
107
102
109
115
114
104
115
103
108.2
—
103
113
114
ADCP-50-322 • Issue 1 • March 2000
7
CUSTOMER INFORMATION AND ASSISTANCE
For customers wanting information on ADC products or help in using them, ADC offers the
services listed below. To obtain any of these services by telephone, first dial the central ADC
telephone number, then dial the extension provided below.
The central number for calls originating in the U.S.A. or Canada is 1-800-366-3891. For calls
originating outside the U.S.A. or Canada, dial country code “1” then dial 952-946-3000.
Sales Assistance
Extension 3000
• Quotation Proposals
• Ordering and Delivery
• General Product Information
Systems Integration
Extension 3000
•
•
•
•
•
•
•
Complete Solutions (from Concept to Installation)
Network Design and Integration Testing
System Turn-Up and Testing
Network Monitoring (Upstream or Downstream)
Power Monitoring and Remote Surveillance
Service/Maintenance Agreements
Systems Operation
BATG Technical Assistance Center
Extension 3223
E-Mail: technical@adc.com
•
•
•
•
•
•
Technical Information
System/Network Configuration
Product Specification and Application
Training (Product-Specific)
Installation and Operation Assistance
Troubleshooting and Repair/Field Assistance
Product Return Department
Extension 3748
E-Mail: repair&return@adc.com
• ADC Return Authorization number and instructions must
be obtained before returning products.
Product information may also be obtained using the ADC web site at www.adc.com or by
writing ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In
no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension
3223 (in U.S.A. or Canada) or 952-946-3223 (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc.,
Attn: Technical Assistance Center, Mail Station #77, P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
© 2000, ADC Telecommunications, Inc.
All Rights Reserved
Printed in U.S.A.
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