AT&T System 85 User manual

AT&T
AT&T
System
85
Release 2
Versions 1, 2,
3, and 4
Remote
Module
and
Remote
Group
Interface
Installation
and
Test

555-103-112
Issue 1, July 1987
AT&T
System
85 •
Release 2, Versions 1, 2, 3, and 4
Remote Module and
Remote Group Interface
Installation and
Test
Copyright C) 1987 AT&T
All Rights
Reserved
Printed in
U.S.A.
4.

TO
ORDER
COPIES OF THIS
MANUAL
Call:
AT&T
Customer
Information
Center on
800-432-6600
In Canada
Call 800-255-1242
Write: AT&T
Customer
Information
Center
2855 North
Franklin Road
P. 0.
Box 19901
Indianapolis,
Indiana 46219
For
more
information about
AT&T documents,
see AT&T
Business
Communications Systems
Publications
Catalog,
555-000-010.
Every effort
was made
to ensure
that the
information in
this
document
was complete
and accurate
at the time
of
printing.
However,
information is
subject to
change. This
document will be
reissued
periodically to
incorporate
changes.
Published by
The AT&T
Documentation
Management
Organization

CONTENTS
Page
INTRODUCTION
1
PURPOSE
1
HOW TO USE
THIS MANUAL
1
ORGANIZATION
1
RMI
SYSTEM INSTALLATION 3
CABINET
INSTALLATION
REMOTE
MODULE INTERFACE CARRIER INSTALLATION (PHASE
2)
LIGHTGUIDE CABLE INTERCONNECT TERMINAL (LCIT)
CENTRAL AND REMOTE MODULE
CONTROL CARRIER PAIRING
Phase 1
7
9
11
11
Unduplicated System
11
Duplicated System
13
Phase 2
16
Unduplicated System
16
Duplicated System
17
CABLING AND CIRCUIT PACKS
17
Cable Connector
Plates
18
Central Location Rear Connector Plates (Phases 1
and 2)
18
Remote Location Rear Connector Plate (Emergency Transfer)
21
ED -1E469 Extended MAAP Brackets
22
Group 4 Central Extended MAAP Bracket (Phase 2)
22
Group 3 Central Extended MAAP Bracket (Phases 1 and 2)
23
Group 2 Remote Extended MAAP
Bracket (Phases 1 and 2)
25
TN456
Circuit Packs
27
Central Location Cabling (Phase 1)
28
ED -1E434, Group 133 Cable
28
ED -1E434, Group 8 Cable
30
ED -1E434, Group 25 Cable
32
ED -1E434, Group 131 Cable
33
ED
-1E434, Group 132 Cable 34

ED
-1E434,
Group
300
Cable
35
ED -1E434,
Group 84
Coaxial
Cabling
36
Loose Wiring
44
Central Location
Cabling
(Phase 2) 45
ED
-1E434, Group
133 Cable
45
ED
-1E434, Group 9,
137, 138, and
139 Cables 46
ED
-1E434,
Group 131
Cable 48
ED -1E434,
Group 200
Cable 49
ED
-1E434, Group
300 Cable 51
ED -1E434,
Group 84 Coaxial Cabling
52
Remote Location
Cabling (Phases 1 and 2)
61
ED -1E434,
Group 97 Cable
61
ED -1E434,
Group 98 Cable
62
ED -1E434, Group 93
Cable
63
ED -1E434, Group 96 Cable
64
ED -1E434, Group
92 Cable
66
Loose
Wiring
66
Fiber -Optic Links
67
Central Location ED
-1E434, Group 461 or 463 RMI Fiber
Link(s) (Phase
1)
71
Central Location ED
-1E434, Group 461 or 463 RMI Fiber
Link(s) (Phase
2)
73
Central
Location ED -1E434, Group 460 or
462 TMS Fiber Link(s)
(Phases 1 and 2)
78
Remote Location ED
-1E434, Group 461 or 463 RMI Fiber
Link(s)
(Phases 1 and 2)
86
Remote Location ED
-1E434, Group 460 or 462 TMS
Fiber Link(s)
(Phases 1 and 2)
88
ED -1E434, Group
300 Cross -Connect Field Cabling
90
Central Location (Phase 1)
90
Central Location (Phase 2)
91
Remote Location (Phases 1 and 2)
93
Lightguide Splicing
in LCIT
93
RE MOTE CONSOLE
94
Introduction
94
Install the ORPI
96
Install the LCIT
96
Central Location
Connections
96

ORPI
to System 85 Connections 96
ORPI
to
LCIT Connections 99
Remote
Location Connections 100
LCIT
to ORPI
Connections
100
ORPI
Connections
101
Fanning
Out Alarm Leads 103
Console
Connections 104
Customizing Fiber
-Optic Links
104
CUSTOMIZING
FIBER-OPTIC LINKS
109
REMOTE
GROUP
INTERFACE (RGI)
INSTALLATION 112
CENTRAL LOCATION
CONNECTIONS
112
REMOTE
LOCATION
CONNECTIONS
112
Wall Mounting the
Remote Group Housing
113
Removing and
Installing Circuit Packs
115
Option Settings
117
CAL1B
117
ANN15B and
ANN16B Options
118
634WAAB1
Series 4 and Higher
Power Supply
119
551V CSU
Options
120
Channel
Expansion Multiplexer
(CEM) Options
122
Channel Division Multiplexor
(CDM)
131
Power, Grounding and Alarm
Connections
146
Off-line Switcher
(OLS) With No
Holdover or Reserve
Power 146
OLS With
Nominal Holdover
147
—48 V
Rectifier With No
Holdover
148
Extended
PoWet. Reserve
149
CSU, CDM,
and CEM
Power, Grounding, and
Alarms
150
T1 Carrier to
RGI
151
T1 Carrier
Directly to RGI
151
Ti Carrier to RGI Using CSU
152
Ti Carrier to RGI Using
CDM and 551V CSU
152
Ti Carrier to RGI Using
CEM and 551V CSU
154
Ti Carrier
to RGI Using_CEM,
CDM, and CSU
154
Looping
Office Repeater (LOR)
156
Options
156
Connections
157
CDM Terminating Information
159

Port
Circuit
Pack
Terminating Information
163
ANN17B
163
SN-Type Port
Circuit Packs
164
ANN16B
164
Front
Cover Label
166
SYSTEM TESTS
167
GENERAL
167
RMI-SYSTEM
TESTS
167
•
RGI SYSTEM
TESTS
169
ANN16B Circuit
Pack Insertion •
169
INDEX
•171
- iv -

LIST OF
FIGURES
Figure
1.
Unduplicated RMI System (Phase 1) Block Diagram
3
Figure 2.
Duplicated RMI System (Phase 1)
Block Diagram
4
Figure 3. Unduplicated
RMI System (Phase 2)
Block Diagram
5
Figure 4.
Duplicated
RMI System (Phase 2) Block
Diagram 6
Figure 5. RMI
Carrier (Phase 2)
Installation
7
Figure 6. LOT
Installation on
Wall
10
Figure 7.
Assigned Module Control
Carriers for Unduplicated
System (Phase
1)
12 -
Figure 8.
Assigned Module Control
Carriers for a Duplicated System
With One
Central and One
Remote Module (Phase 1)
13
Figure 9.
Assigned Module Control Carriers for
a Duplicated System With
Four
Central and Two Remote
Modules (Phase 1)
14
Figure
10. Assigned Module Control
Carriers for a Duplicated
System With Three
Central and
Three Remote Modules (Phase
1)
15
Figure 11. Rear
Connector Plate (845416585) and Locations (Phase
1) 18
Figure 12. Rear
Connector Plate (845416585) and
Locations (Phase 2)
19
Figure 13. Rear
Connector Plate (845416577) and
Location (Phases 1 and
2)
20
Figure 14. Rear Connector
Plate (845417229) and Location
(Phases 1 and
2)
21
Figure 15.
ED -1E469, Group 4
Central Extended MAAP
Bracket (Phase
2)
22
Figure 16. ED
-1E469, Group 3 Central
Extended MAAP
Bracket (Phases 1 and
2)
23
Figure
17. ED -1E469, Group
3 Central Extended
MAAP Bracket
Mounting
Location
24
Figure 18. ED
-1E469, Group 2 Remote
Extended MAAP
Bracket (Phases 1 and
2)
25
Figure 19. ED
-1E469, Group 2
Remote Extended MAAP
Bracket Mounting
Location
26
Figure 20.
Option Switch Locations for
TN456 Circuit Pack
27
Figure 21. ED -1E434, Group 133 Cable
29
Figure 22. ED -1E434,
Group 8 Cable
31
Figure 23. ED -1E434, Group 25 Cable
32
Figure 24. ED -1E434,
Group 131 Cable
33
Figure 25. ED
-1E434, Group 132 Cable
34
Figure
26. ED -1E434, Group 300 Cable
35
- v -

Figure 27.
Figure 28.
Figure
29.
Figure 30.
Figure 31.
Figure
32.
Figure
33.
Figure
34.
Figure 35.
Figure 36.
Figure 37.
Figure 38.
Figure
39.
Figure
40.
Figure 41.
Figure 42.
Figure 43.
Figure 44.
Figure
45.
Figure 46.
Figure 47.
Figure
48.
Figure
49.
Figure 50.
Figure 51.
Figure
52.
Figure 53.
ED
-1E434, Group 84
Coaxial Cable
37
ED -1E434, Group 84
Connections for an All Unduplicated System (Phase
1)
37
ED -1E434, Group 84 Connections for an All Duplicated System
(Phase
1)
39
ED -1E434, Group 84 Connections
for all Duplicated Common Control and
Unduplicated Module Control System (Phase 1) 41
ED -1E434, Group 133 Cable 45
ED -1E434, Group 9, 137, 138, and
139 Cable
47
ED -1E434, Group 131 Cable 48
ED -1E434, Group 200 Cable 50
ED -1E434, Group 300 Cable 51
ED -1E434, Group 84 Coaxial Cable
53
ED -1E434, Group 84 Connections for an Unduplicated System (Phase
2)
53
ED -1E434, Group 84 Connections for a
Duplicated System (Phase
2)
ED -1E434, Group 84 Connections for a Duplicated Common Control and
Unduplicated Module Control System (Phase 2) 58
ED -1E434, Group 97 and 98 Cable
61
ED -1E434, Group 93
Cable
63
ED -1E434, Group 96
Cable 65
ED -1E434, Group 92 Cable
66
Duplex Cable (Lightguide) With Paddleboard Transmitter and
Receiver
67
Z982J, Z982C, and Z982D Paddleboards and Mounting
Locations
LCIT With 3 -Type Fanout
Routing of Lightguide Cables to LCIT
Central RMI Fiber -Link Connections for Unduplicated Module Control
(Phase 1)
Central RMI Fiber -Link Connections for Duplicated Module Control
(Phase 1)
Central
RMI
Fiber -Link Connections for
Unduplicated Module Control
(Phase 2)
Central RMI Fiber -Link
Conn
(Phase 2)
Central TMS Fiber -Link Con
(Phases 1 and 2)
Central TMS Fiber -Link Con
(Phases 1 and 2)
ections for Duplicated Module Control
nections for
Unduplicated Module Control
nections for
Duplicated Module Control
55
68
69
70
71
72
73
75
79
82

Figure 54.
Remote
RMI
Fiber -Link
Connections
for
Unduplicated
Module Control
(Phases 1 and 2)
86
Figure 55.
Remote
RMI
Fiber -Link
Connections for
Duplicated Module Control
(Phases 1
and 2)
87
Figure 56.
Remote
TMS Fiber -Link
Connections for
Unduplicated Module Control
(Phases 1 and 2)
88
Figure 57.
Remote
TMS Fiber
-Link
Connections
for Duplicated Module Control
(Phases 1
and 2)
89
Figure 58. Central Alarm and MAAP Connections (Phase 1)
90
Figure 59.
Central
Alarm and MAAP
Connections (Phase 2) 91
Figure 60. Remote
Location Cross -Connections (Phases 1 and 2) 93
Figure
61. Remote Console Block Diagram 95
Figure 62. ORPI
Warning Label
96
Figure 63. System 85
to ORPI Connections
97
Figure
64. ORPI to LCIT Connections
99
Figure 65. ORPI to LCIT Connections 100
Figure 66. D1 Cross -Connect Connections 102
Figure 67. Fanning Out Alarm Leads 103
Figure 68. Console Connector Terminating Information 104
Figure 69. Circuit Pack AE W3 Switch Locations 105
Figure 70. Attenuator Locations 105
Figure 71. Flowchart for Adjusting the ORPI
Fiber -Optic Link
108
Figure
72. Flowchart for Adjusting the RMI Fiber -Optic Link 111
Figure
73. Remote Group Interface Block Diagram 112
Figure 74. Remote Group Housing
(J
58889AN-1) 113
Figure 75. Remote Group Housing 58889AN-2)
113
Figure 76. RGH
Wall Mounting Bracket 114
Figure 77. J
58889AN-1 Front Cover Description 115
Figure 78.
J58889AN-2 Front Cover Description 115
Figure 79. J58889AN-1 Circuit Pack
Location 116
Figure 80. J58889AN-2 Circuit Pack Locations
116
Figure 81. CAL1B Options '
117
Figure 82. ANN15B and ANN16B Switch Locations 118
Figure
83. 634WAAB1 Switch Locations
119
Figure
84. System
Monitor, Unit
120
Figure
85.
Office Repeater
121
Figure 86. Switch Locations
123
Figure 87. Drop/Insert Matrix 133

Figure 88.
Switch
Locations
134
Figure 89.
30003-002 4 -Wire
E&M
Channel
Unit 136
Figure 90.
Asynchronous
Data Channel
Unit Switch
Locations
and
Setting
137
Figure 91.
30044-002 4 -Wire
E&M Channel
Unit Switch
Locations
137
Figure 92.
RS -422 Switch
Locations
140
Figure 93. RS -232C
Switch Locations
141
Figure 94.
5 6 / 6 4 kbps Synchronous Data
Channel Unit 142
Figure 95. V.35/RS-449
Option Switch Locations 143
Figure 96. Equalizer
Location
145
Figure 97. OLS With No Holdover
146
Figure 98. OLS With Holdover
147
Figure 99. -48 V Rectifier With No Holdover
148
Figure 100. Extended Power Reserve
149
Figure 101. CSU, CDM, and
ChM Power,
Grounding,
and Alarms
150
Figure 102. T1 Carrier Directly to RGI
151
Figure 103. Ti Carrier ,to RGI Using CSU
152
Figure 104. Ti Carrier
to RGI Using CDM and CSU
153
Figure 105. T1 Carrier to RGI Using CEM
and CSU
154
Figure 106.
Ti
Carrier to RGI Using CEM, CDM, and CSU
155
Figure 107. LOR Option Switch Locations
156
Figure 108. RGI With LOR Block Diagram
158
Figure 109. LOR Connections
159
Figure 110. Front Cover Label
166
4

LIST
OF
TABLES
TABLE A.
Power, Ground, and Alarm
Connections
for the
RMI
Carrier .
8
TABLE B. Assignment Order of
TN456
Circuit Packs
(Unduplicated
Phase
2)
16
TABLE
C.
Assignment Order of
TN456
Circuit Packs
(Duplicated
Phase
2)
17
TABLE D. ED -1E434,
Group 133
Cable
Connections (Phase 1)
28
TABLE E. ED -1E434,
Group 8 Cabie
Connection(s) (Phase 1)
30
TABLE F. ED -1E434,
Group 25 cable
Connection(s) (Phase
I)
32
TABLE
G.
ED
-1E434, Group 131 Cable
Connection (Phase
1)
33
TABLE H. ED
-1E434, Group 132
Cable Connection
(Phase 1)
34
TABLE I. ED -1E434,
Group 84
Connections for an
All
Unduplicated System
(Phase
1)
38
TABLE J. ED
-1E434, Group
84 Connections
for an All
Duplicated System
(Phase
1)
40
TABLE K. ED -1E434,
Group 84
Connections for
all Duplicated
Common
Control
and
Unduplicated Module
Control System
(Phase 1)
42
TABLE L.
Loose Wiring
Connections
(Phase 1)
44
TABLE M.
ED -1E434,
Group 133 Cable
Connections
(Phase 2)
45
TABLE
N.
ED
-1E434, Group 9,
137, 138, and
139 Cable
Connections
(Phase
2)
46
TABLE
0. ED -1E434,
Group 131 Cable
Connection (Phase 2)
48
TABLE P.
ED -1E434,
Group 200 Cable
Connection (Phase
2)
49
TABLE Q. ED
-1E434, Group 84
Connections for
an Unduplicated
System
(Phase
2)
54
TABLE R.
ED -1E434,
Group 84
Connections for a
Duplicated System
(Phase
2)
56
TABLE R. ED
-1E434, Group
84 Connections
for a
Duplicated System
(Phase 2)
(Contd)
57
TABLE S.
ED -1E434, Group
84 Connections
for a Duplicated
Common Control
and
Unduplicated Module
Control System
(Phase 2)
59
TABLE T. ED
-1E434, Group
97 Cable
Connection(s)
(Phases 1 and 2) 61
TABLE U. ED
-1E434, Group
98 Cable
Connection(s)
(Phases 1 and 2) 62
TABLE V.
ED -1E434,
Group 93 Cable
Connection(s)
(Phases 1 and 2) 63
TABLE W.
ED -1E434,
Group 96 Cable
Connections
(Phases 1 and 2)
64
TABLE X.
ED -1E434,
Group 92 Cable
Connection(s)
(Phases 1 and 2) 66
TABLE Y.
Loose Wire
Connection(s) (Phases
1 and 2) A6

TABLE Z.
RMI
Carrier Backplane Connections for Unduplicated
Module Control
(Phase
2)
74
TABLE
AA.
RMI
Carrier Backplane
Connections for
Duplicated
Module Control
(Phase 2)
76
TABLE AB. Central TMS Fiber -Link Connections for
Unduplicated Module Control
(Phases 1 and 2)
80
TABLE AC. Central TMS Fiber -Link Connections for a 1 Through 15 Module System
(Phases 1 and 2 Duplicated Module Control)
83
TABLE AD. Central TMS Fiber -Link Connections for a 1 Through 31 Module System
(Phases 1 and 2 Duplicated Module Control)
84
TABLE AE. Unit Lead Connections
92
TABLE AF. D1 Connector Lead Designations
98
TABLE AG.
Cable Group
99
TABLE AH. Cable
Group
100
TABLE Al. D1 Connector Lead Designation
101
TABLE AJ . Fiber -Optic Link Power Options
107
TABLE AK. Options for Fiber -Optic Link
Power Levels 110
TABLE AL.
Switch Settings 118
TABLE
AM. SMU Options 121
TABLE AN. OR
Options 122
TABLE AO.
SM470 Options 122
TABLE AP. TM501 Options 123
TABLE AQ.
TM500 Options
124
TABLE AR.
MC90069A-1 Options
124
TABLE AS. MC90069A-1 Faceplate Options—No Through Channels 125
TABLE AT. 12 Channels Compressed—No Signaling
125
TABLE AU. Signaling
Channels With Through Channels
126
TABLE AV. No
Signaling Channels With Through Channels
127
TABLE BB. 30044-002 4
-Wire E&M Unit—S2, S3, S5, and S10 Settings
TABLE BC. RS
-422 Option Settings
139
140
TABLE BD. RS -232C
Option Settings
141
TABLE BE. V.35/RS-449
Option Settings
144
TABLE BF. CDM
Equalizers
145
TABLE AW.
MC90007A-1 Dip Switch Options
128
TABLE
AX. Robbed -Bit
Signaling
With Through Channels
129
TABLE AY.
Matrix
Programming Guide
132
TABLE
AZ.
Switch
Settings
135
TABLE BA. 30003-002 4
-Wire E8.zM Unit—S10 Switch Settings
138

TABLE
BC.
LOR
Switches Si and S4
156
TABLE
BH.
Power
Switch S2
157
TABLE BI.
Loopback
Switch S3
157
TABLE BJ.
Loop
-Up Timing
Switch S5
157
TABLE BK.
Fault Locate Switch
S6
157
TABLE BL.
Connections for
24 -Channel CDM
160
TABLE BM.
Connections for 8 -Channel CDM
161
TABLE BN. CDM CH1
Through CH8 Connecting
Information
162
TABLE BO.
ANN17B
Terminations
163
TABLE BP.
SN-Type Circuit Pack Terminations
164
TABLE
BQ. ANN16B
Terminations
165

INTRODUCTION
PURPOSE
This
manual provides the instructions for installing the remote equipment associated with
System
85.
This includes the Remote
Module Interface (RMI), with
and without a remote
console, and
the Remote Group
Interface (RGI).
This
manual
provides
instructions for
installing
and testing
the Phase 1
and/or
Phase 2 RMI
for all Versions of a Release 2 System 85. A Phase 1 system can place up to 15 module
control cabinets at one or more remote locations. For each remote module control, there
must be a module control at the central location. The remote
modules are tied into the rest
of the system by using TN456 circuit packs that channel them through a central module to
the
common control.
A Phase 2 system utilizes the RMI carrier to provide up to 30 remote modules with only one
central module control. The remote modules are tied to the central module using TN456
Lightguide Interface circuit packs that channel them through the RMI carrier to the
common control.
The remote console is a feature associated with the RMI. The console requires the use of
two Optically Remoted Peripheral Interfaces (ORPIs) in a fiber-optic link subsystem.
The installation and testing will require limited downtime to each individual module control
cabinet associated with the RMI during installation procedures. Included are instructions
for hardware requirements, cabling details, and general guidelines for installation.
This manual also provides the installation procedures for the Remote Group Interface (RGI)
feature. This feature
utilizes the Remote
Group
Housing (RGH), an ANN15B in the
DS1/MFAT carrier at the central location, and an ANN16B at the remote location. It
utilizes the SN228, SN270, SN238, and ANN17B port circuit packs to provide remote service.
Complete all other installation procedures using AT&T System 85 Installation (555-103-104)
before installing the RMI or
RGI.
HOW TO USE THIS MANUAL
A "start to finish" sequence to the installation process is arranged to
permit several tasks to
be accomplished at a time. For example, if more than one person is working on the job, one
can work at the remote location while another works at the central location. Some of the
installation processes described in this book may already be in place if the system being
worked on is a new system that was engineered with RMI or RGI in mind.
It is recommended that you become familiar with the contents and
organization of this
manual. Make use of the Table of Contents and Index to locate your task.
ORGANIZATION
This manual is
divided into the sections described as follows:
• RMI SYSTEM INSTALLATION—The installation procedures for Phase 1 and Phase
2 RMI on an Unduplicated and Duplicated
System 85. It also contains the
installation procedures for the remote console.
Page 1

CUSTOMIZING FIBER-OPTIC LINKS—The procedure for adjusting the fiber-optic
links
between central remote locations after the installation procedures are
completed.
RGI INSTALLATION—The installation procedures for the RGI feature and its
associated hardware.
SYSTEM TESTS—The testing procedure for Phases 1 and 2 RMI on a Duplicated and
Unduplicated System 85. It also describes the testing procedure for the RGI.
INDEX—A permuted index.
Page 2

RMI SYSTEM
INSTALLATION
This
section
contains
instructions for installing
RMI hardware in an
unduplicated and
duplicated
system. Figures 1 and 2 are
basic
block diagrams showing the connections
necessary to
add
Phase 1 RMI
to an existing unduplicated or
duplicated System 85. Figures
3
and 4 are basic block
diagrams
showing the connections
necessary to add
Phase 2 RMI to
an existing
unduplicated or
duplicated system.
The duplicated
systems shown in
Figures 2
and 4
are for fully
duplicated control
functions (common
control, module
control, and Time -
Multiplexed
Switch [TMS]). It is
possible to have
other combinations
of duplication.
The
actual
connections for these
configurations are shown later in this
manual.
MODULE
CONTROL
CABINET
TN456
MIj
R
LIGHTGUIDE
LINK
CABLE
INTERCONNECT
TERMINAL
(LCIT)
TMS
CABINET
TN480
ALARM
PANEL
TMS LINK
MISC
ALARMS
COMMON
CONTROL
TN402
DUPLEX
FIBER
OPTIC
FIBER
OPTIC
LINK
4 MHz COAX
CABLING
II
LIGHTGUIDE
CABLE
INTERCONNECT
TERMINAL
I
LCIT )
DUPLEX
FIBER
OPTIC
RMI
LINK
4 MHZ I
COAX
CABLE A
TMS
LINK
TN481
TN456
CENTRAL
LOCATION
REMOTE LOCATION
TN401
MODULE
CONTROL
CABINET
Figure 1.
Unduplicated
RMI
System
(Phase 1)
Block
Diagram
Page 3

RMI
LINK
DUPLEX
FIBER
TMS
LINK
DUPLEX F
BER
MODULE
CONTROL
0
TN456
MODULE
CONTROL
1
TN456
I.)
TMS
TN4130
TMS
TN480
ALARM
PANEL
MISC
ALARMS
COMMON
CONTROL
0
TN402
COMMON
CONTROL
1
TN402
LIGHTGUIDE
CABLE
INTERCONNECT
TERMINAL
(LCIT)
4 MHZ
COAX
CABLE
FIBER
OPTIC
LINK
LIGHTGUIDE
CABLE
INTERCONNECT
TERMINAL
(LCIT)
4
MHZ
COAX
CABLE
CENTRAL
LOCATION
REMOTE
LOCATION
Figure 2.
Duplicated RMI
System
(Phase 1)
Block Diagram
RMI LINK
DUPLEX FIBER
TMS
LINK
DUPLEX FIBER
TN401
MODULE
CONTROL
0
MODULE
CONTROL
Page 4