ADCP-61-045 • Issue 5 • November 2000
Model M1544-200 T1 Repeater)
Mounting Shelf (4-Inch, 14-Position)
Equipped with Alarm Relay User Manual)
10082-A
Model M1544-200
Content
Page
INTRODUCTION .......................................................................... 1
1
PRODUCT DESCRIPTION ............................................................... 3
2
SPECIFICATIONS..................................................................... 4
3
INSTALLATION ...................................................................... 5
3.1
Shelf Mounting Procedure......................................................... 5
3.2
T1 Line Wiring Procedure ......................................................... 6
3.3
Power (–48 Vdc and Ground) Connections .............................................. 6
3.4
Alarm Connections.............................................................. 8
4
OPERATION ........................................................................ 9
5
CUSTOMER INFORMATION AND ASSISTANCE .................................................12
INTRODUCTION
This user manual contains descriptions of ADC’s T1 Repeater Mounting Shelf, 4", 14-Position
Model M1544-200. Shelf installation procedures, installer wiring connections and an operational
section are also included.
The ADC T1 Repeater Mounting Shelf, 4", 14-Position Model M1544-200, provides a
centralized location for mounting and wiring up to 14 T1 repeaters. Network element
connections are made via wire wrap pins at the back of the shelf. The current repeaters that can
be mounted in the T1 Repeater Mounting Shelves along with their associated user manuals are
listed in Table 1; the list of discontinued repeaters that can be mounted in the T1 Repeater
Mounting Shelves are listed in Table 2.
1079774 Rev A
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
The mounting shelf occupies two, 2-inch (5.08 cm) rack spaces in a 19- or 23-inch (48.26
or 58.42 cm) relay rack.
Table 1. Current T1 Repeaters with Associated User Manuals
REPEATER
USER MANUAL
Model T1544-00D Dual Intraoffice T1 Repeater
ADCP-61-051
Model T1544-10B T1 Bridging Repeater
ADCP-61-011
Model T1544-11B T1 Dual Bridging Office Repeater
ADCP-61-013
Model T1544-30B T1 Short Loop Office Repeater
ADCP-61-020
Model T1544-02B Dual T1 Interbay Repeater
ADCP-61-030
Table 2. Manufacture Discontinued T1 Repeaters
REPEATER
Model T1544-00 and T1544-00A Dual Intraoffice T1 Repeater
Model T1544-10 and T1544-10A T1 Bridging Repeater (Single Regenerative).
Model T1544-11 and T1544-11A T1 Dual Bridging Repeater.
Model T1544-30 and T1544-30A T1 Short Loop Office Repeater
Model T1544-02 and T1544-02A Dual T1 Interbay Repeater
Revision History
ISSUE
DATE
Issue 1
07/1991
Original
REASON FOR CHANGE
Issue 2
01/1992
Replaced User Manual ADCP-61-014 and add reference to the shelf being compatible with
manufacture discontinued repeaters.
Issue 3
12/1993
Change model numbers in paragraph 2.01 and Table on page 2.
Issue 4
09/1997
Update to current format standards.
Issue 5
11/2000
Update to current format standards.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.
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.
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
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.
1
PRODUCT DESCRIPTION
The T1 Repeater 14-Position Mounting Shelf, shown in Figure 1, provides 14 mounting slots
for ADC’s T1 Repeater plug-in modules. The slots support and guide the plug-in modules into
12-pin card edge connectors mounted on the inside rear of the mounting shelf’s frame. The
mounting shelf consists of a steel chassis with top and bottom vent slots to provide heat
dispersion. The shelf comes equipped with reversible mounting flanges (brackets) allowing
the shelf to be mounted in either a 19- or 23-inch (48.3 or 58.4 cm) relay rack. The mounting
flanges are also adjustable so that the shelf can be installed flush or extend two, four or five
inches (5.1, 10.2 or 12.7 cm) beyond the front of the relay rack.
23.0 IN. (58.4 CM)
22.3 IN. (56.7 CM)
19.0 IN. (48.3 CM)
2.0 IN.
(5.1 CM)
18.3 IN. (46.5 CM)
3.0 IN.
(7.6 CM)
1.3 IN.
(3.2 CM)
4002-B
Figure 1. T1 Repeater Mounting Shelf, Front View
All external connections to the mounting shelf; i.e., T1 transmit and receive lines, power
(–48V and +V GND), and alarm leads are made via fourteen 12-pin wire wrap terminal strips
at the back of the shelf. The pin assignments for a 12-pin terminal strip are shown in Figure 2.
The alpha pin designations refer to the right-hand column of terminals and the numeric
designations refer to the left-hand terminals, as viewed from the back. A chassis ground
terminal is provided for terminating office frame ground. A removable plastic shield mounts
over the rear of the mounting shelf to prevent accidental contact with the wire wrap terminals.
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© 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
-48V
T
INPUT
REGEN. A
R
+ V GND
T1
OUTPUT
REGEN. A
R1
6
F
5
E
ALARM
T
D
4
INPUT
REGEN. B
R
CHASSIS GND
SHIELD (OPTIONAL)
3
C
2
B
1
A
T1
OUTPUT
REGEN. B
R1
1653-A
Figure 2. 12-Pin Terminal Strip Pin Assignments
Note: In reference to terminology throughout this user manual, the –48 Vdc battery supply
is synonymous with the –48 Vdc power supply. Also, battery return is synonymous with
+V Ground.
An alarm relay board, located on the backplane 14th position, provides two sets of normally
open (NO) dry contact alarm terminals. A mounting position alarm condition (plug-in module
fuse failure) causes the alarm relay to operate and the (NO) contacts to close. After the alarm
condition is cleared, the relay releases and the contacts return to their (NO) position. The rear
view of the T1 Repeater Mounting Shelf with an exploded view of the alarm relay board is
shown in Figure 3.
13
14
5
6
F
6
6 F
ALM #1
NO
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ALM #2
NO
1 A
A
1A
CHAS GND
4003-A
CHASSIS
GROUND
ALARM RELAY
BOARD
Figure 3. T1 Repeater Mounting Shelf (Rear View)
2
SPECIFICATIONS
Table 3 list the maximum supply current for each T1 repeater model, along with the
associated full-shelf maximum current, full-shelf maximum wattage, and recommended shelf
fuse size.
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
Table 3. T1 Repeater 4", 14-Position Mounting Shelf Specifications
SPECIFICATIONS
PARAMETER
MAXIMUM SUPPLY CURRENT
One Repeater
Repeater Model:
T1544-00D
T1544-02B
T1544-10B
T1544-11B
T1544-30B
T1544-30B with
60 mA enabled
Shelf Dimensions:
(H × W × D)
30 mA
50 mA
35 mA
50 mA
38 mA
MAXIMUM WATTAGE
Full Shelf
Recommended
Shelf Fuse Size
Full Shelf
420 mA
700 mA
490 mA
700 mA
532 mA
11/3 A
11/3 A
11/3 A
11/3 A
11/3 A
20 watts
33 watts
24 watts
33 watts
25 watts
1.4 A
2.0 A
66 watts
98 mA
4.0 × 19.0 or 23 × 11.5 inches (10.2 × 48.3 or 58.4 × 29.2 cm)
Power Requirements:
Power Supply
–42 to –56 Vdc
Environmental:
Operating Temperature
Storage
Relative Humidity
Operation
Alarm Relay Contacts
3
0° C to 50° C (+32° F to +122° F)
–40° C to +70° C (–40° F to +158° F)
20% to 80%
–1.0 Amp maximum
INSTALLATION
This section provides installation and wiring procedures for ADC’s T1 Repeater Mounting
Shelf, 4", 14-Position Model M1544-200.
3.1 Shelf Mounting Procedure
The T1 Repeater Mounting Shelf is equipped with reversible mounting flanges that permit the
shelf to be installed in a 19- or 23-inch (48.3 or 58.4 cm) relay rack. There are also four predrilled mounting flange locations on each side of the shelf for installing the mounting shelf
either flush or to protrude two, four or five inches (5.1, 10.2 or 12.7 cm) beyond the front of
the relay rack. The mounting shelf, as shipped from the factory, will install in a 19-inch (48.3
cm) relay rack, optioned for two-inch (5.1 cm) mounting.
Install the mounting shelf by positioning it into the designated location in the relay rack. Align
the shelf mounting flange holes to the relay rack mounting holes and secure with four
12-24 × 0.5 inch (1.3 cm) machine screws.
Note: To minimize heat build-up, mounting shelves should be installed in the relay rack
with a 2-inch (5.1 cm) heat baffle between each group of six shelves. Refer to
TR-EOP-000063 or to other local requirements that may apply, for system-level
equipment heat dissipation.
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© 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
3.2 T1 Line Wiring Procedure
T1 transmit and receive line connections are made via fourteen 12-pin wire wrap terminal
strips at the back of the shelf. See Figure 4. Using Figure 4 as a reference, connect T1 transmit
and receive lines to the designated wire wrap pins at each slot position. Pin C, which may be
used to connect the cable shield when using individual shielded pairs, or the drain wire (shield
ground) when using ABAM type cable, is internally connected to the chassis ground.
INSTALLER
CONNECTIONS
14
SHIELD
GROUND
13
12
11
10-5
4
3
2
1
6 F
6 F
5 E
5 E
4 D
4 D
3 C
3 C
2 B
2 B
A
1
T R R1
T1
A
1
T R R1
T1
WHEN TERMINATING SINGLE
REGENERATIVE BRIDGING OFFICE
REPEATERS, CONNECT TO
INPUT AND OUTPUT REGENERATOR A
(NUMERIC PIN DESIGNATIONS)
T R R1
T1
T R R1
T1
INPUT REGENERATOR A
OUTPUT REGENERATOR A
INPUT REGENERATOR B
OUTPUT REGENERATOR B
OUTPUT REGENERATOR B
INPUT REGENERATOR B
OUTPUT REGENERATOR A
INPUT REGENERATOR A
INSTALLER
CONNECTIONS
10083-A
Figure 4. T1 Transmit and Receive Line Installer Connections
Note: When a mounting slot position is occupied by a single regenerative repeater,
connect the T1 transmit and receive lines to the numeric pin designations: INPUT
REGENERATOR A and OUTPUT REGENERATOR A. Refer to Figure 4.
3.3 Power (–48 Vdc and Ground) Connections
Installer connections for wiring the –48 Vdc power supply are shown in Figure 5. Using 20
gauge wire, connect the –48 Vdc to wire wrap pin 6 and the battery return to pin 3. The –48 Vdc
power supply is separately fused with the fuse size defined in Table 3. Each mounting shelf
should be wired and fused in this manner within the bay. The chassis ground terminal that
connects to the office frame ground is shown in Figure 3.
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
14
POWER
CONNECTIONS
-48 V
BATTERY
+V
GROUND
6 F
13
12
6
6
11
6
10-5
4
3
6
6
2
6
1
6 F
5 E
5 E
4 D
4 D
3 C
3 C
2 B
2 B
1 A
1 A
10084-A
Figure 5. Power (–48 Vdc and Ground) Installer Connections
The T1 Repeater Mounting Shelf may be wired with a separate –48 Vdc power supply to each
of the 14 repeater mounting slots. Wiring changes are made at the wire wrap terminals on the
backplane of the mounting shelf. To connect a separate power supply to each slot position,
remove the existing power and ground supply and connect a separate power supply to each
mounting slot position as follows:
1. Disconnect the white wires (–48 V) that are series wired to pin 6 at all 14 repeater
mounting slots. Refer to Figure 5.
2. Disconnect the black wires (+V GND) that are series wired to pin 3 at all 14 repeater
mounting slots.
3. Using 22 gauge wire, connect a separate –48 Vdc power supply and battery return to
each repeater mounting slot as defined in Table 4.
Table 4. Separate –48V Power Supply Installer Connections
ITEM
CONNECT TO
MTG-PIN
ITEM
CONNECT TO
MTG-PIN
–48V
GND
J14-6
J14-3
–48V
GND
J7-6
J7-3
–48V
GND
J13-6
J13-3
–48V
GND
J6-6
J6-3
–48V
GND
J12-6
J12-3
–48V
GND
J5-6
J5-3
–48V
GND
J11-6
J11-3
–48V
GND
J4-6
J4-3
–48V
GND
J10-6
J10-3
–48V
GND
J3-6
J3-3
–48V
GND
J9-6
J9-3
–48V
GND
J2-6
J2-3
–48V
GND
J8-6
J8-3
–48V
GND
J1-6
J1-3
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© 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
3.4 Alarm Connections
The alarm relay board is located on the backplane at the 14th mounting position. The alarm
relay furnishes two sets of normally open (NO) wire wrap dry contact terminals. Installer
wiring connections are shown in Figure 6.
14
13
-48V
6 F
TO PIN 6, TERMINAL
STRIPS 12 THROUGH 1
6 F
6
ALARM
ALARM #1 (NO)
TO OFFICE AUDIBLE
ALARM EQUIPMENT
3
1
1 A
ALARM #2 (NO)
TO OFFICE VISUAL
ALARM EQUIPMENT
1 A
+V GND
CHASSIS GROUND
10086-A
ALARM RELAY BOARD
Figure 6. Alarm Relay Board Installer Wiring Connections
The alarm relay board may be bypassed by connecting an ADC fuse and alarm panel to wire
wrap pin “F” as shown in Figure 7. A mounting shelf alarm condition (plug-in module fuse
failure) places –48 Vdc signal on pin “F”.
14
13
12
11-4
3
2
1
6
F
6
F
6
F
6
F
6
F
6
F
1
A
1
A
1
A
1
A
1
A
1
A
TO ADC
FUSE AND
ALARM PANEL
10085-A
Figure 7. ADC Fuse and Alarm Panel Connections
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
4
OPERATION
A typical bidirectional T1 Dual Intraoffice Repeater arrangement between an Exchange Carrier
DSX-1 (location A) and an Interexchange Carrier DSX-1 (location B) is shown in Figure 8.
EXCHANGE CARRIER
LOCATION A
INTEREXCHANGE CARRIER
LOCATION B
MOUNTING SHELF
POSITIONS 1-14
DSX-1
DSX-1
I/O REPEATER
MON
T JACK
MON
T JACK
5
2
MON
T JACK
MON
T JACK
R
R
4
1
R
R
E
T
D
R
OUT
JACK
TO ORB
T
OUT
JACK
T
REGEN. A
B
A
R
R
IN
JACK
X-CONN
IN
JACK
OUT
JACK
TO
TERMINAL
R
IN
JACK
REGEN. B
OUT
JACK
T
X-CONN
IN
JACK
4037-A
Figure 8. Typical Bidirectional Dual Intraoffice Repeater Arrangement Between Two Carriers
Figure 9 depicts a typical unidirectional T1 Dual Intraoffice Repeater arrangement between an
Exchange Carrier DSX-1 (location A) and an Interexchange Carrier DSX-1 (location B).
EXCHANGE CARRIER
LOCATION A
MOUNTING SHELF
DSX-1
POSITIONS 1-14
INTEREXCHANGE CARRIER
LOCATION B
MOUNTING SHELF
POSITIONS 1-14
MON
T JACK
MON
TJACK
2
R
R
1
OUT
T JACK
OUT
TO ORB T JACK
5
5
4
4
REGEN. A
2
MON
TJACK
MON
T JACK
1
R
R
OUT
TJACK
OUT
T JACK
R
R
REGEN. A
R
R
IN
JACK
DSX-1
I/O REPEATER
I/O REPEATER
IN
JACK
IN
JACK
X-CONN
TO ORB
IN
JACK
X-CONN
MON
T JACK
MON
T JACK
B
E
E
B
MON
T JACK
MON
TJACK
R
R
A
D
D
A
R
R
OUT
T JACK
T
R
R
OUT
T JACK
T
R
R
IN
JACK
OUT
JACK
IN
JACK
X-CONN
TO
TERMINAL
REGEN. B
REGEN. B
TO
OUT
JACK TERMINAL
IN
JACK
IN
JACK
X-CONN
4038-A
Figure 9. Typical Unidirectional Dual Intraoffice Repeater Arrangement Between Two Carriers
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© 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
Service transfers at DSX-1 locations may require the cross-connects between jacks to exceed
the 85 foot limit. Figure 10 shows the typical arrangement of a T1 Dual Intraoffice or Dual T1
Interbay Repeater when the DSX-1 Interbay cross-connects exceed 85 feet.
DSX-1 OR
CROSS-AISLE TERMINAL
DSX-1
OVER 85 FEET
DSX-1 OR
CROSS-AISLE TERMINAL
DSX-1
I/O REPEATER
MON
JACK
TO
ORB
5
2
4
1
MON
JACK
REGEN. A
OUT
JACK
B
A
OUT
TO
JACK TERMINAL
E
D
IN
JACK
REGEN. B
IN
JACK
MOUNTING SHELF
POSITION 1–28
1657-A
Figure 10. Typical DSX-1 Interbay Dual Intraoffice or Interbay Repeater Arrangement
A typical T1 Short Loop Repeater arrangement is shown in Figure 11.
MOUNTING SHELF
POSITIONS 1-14
DSX-1
SHORT LOOP
REPEATER
MON
JACK
2
T
T
4
1
R
R
REGEN. A
TO SPAN
LINE
MON
JACK
5
OUT
JACK
OUT
JACK
B
E
T
T
A
D
R
R
REGEN. B
IN
JACK
X-CONN
TO
TERMINAL
IN
JACK
4039-A
Figure 11. Typical Short Loop Repeater Arrangement
A typical T1 Bridging Office Repeater arrangement for an in-service patch to a stand-by
network element is shown in Figure 12.
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 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
TL
TL
–48V
–48V
GND
GND
CROSS-CONNECT
JUMPERS
MON
T
T
OUT
OUT
OUT
NETWORK
ELEMENT
A
MON
OUT
3
R
R
T1
IN
IN
TERM
PLUG
T1
IN
NETWORK
ELEMENT
B
IN
R1
R1
1a
TL
2
–48V
GND
TERM
PLUG
PATCH
CORDS
MON
OUT
IN
1b
T
OUT
OUT
R
BRIDGING
REPEATERS
OUT
T1
IN
IN
NETWORK
ELEMENT
STANDBY
IN
R1
1d
1c
8794-B
Figure 12. A Typical T1 Bridging Office Repeater Arrangement for an
In-Service Patch to a Stand-by Network Element
Page 11
© 2000, ADC Telecommunications, Inc.
ADCP-61-045 • Issue 5 • November 2000
5
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 612-946-3000.
Sales Assistance
Extension 63000
• Quotation Proposals
• Ordering and Delivery
• General Product Information
Systems Integration
Extension 63000
•
•
•
•
•
•
•
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
BCG Technical Assistance Center
Extension 63475
E-Mail: bcg_tac@adc.com
•
•
•
•
•
•
Technical Information
System/Network Configuration
Product Specification and Application
Training (Product-Specific)
Installation and Operation Assistance
Troubleshooting and Repair
Product Return Department
Extension 63748
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
63475 (in U.S.A. or Canada) or 612-946-3000 (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc.,
Attn: Technical Assistance Center, Mail Station #71, 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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