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Typical System 25 Equipment Area Elevation Plan
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Specs
Physical Characteristics
Parts list
System 25 Block Diagram
End-to-End Signaling
Options Current Default
Timer Functions
Administration Requirements
Wiring
Maintenance
Page 418
Image 418
QUAD AC OUTLETS
Figure
6-2.
Typical System 25 Equipment Area Elevation Plan
6 - 3
Page 417
Page 419
Page 418
Image 418
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Contents
AT&T System
1987 AT&T All Rights Reserved
To Order Copies of this Document Refer to Document Number
Notification to the Telephone Company
Means of Connection
Repair Instructions
Hearing AID Compatibility
Private Line Service
Rights of the Telephone Company
FCC Registration Information
FCC Warning Statement
Contents Section
Overview
Overview
Organization
System 25 Description
Merlin
System 25 Block Diagram
Call Handling Capabilities
Safety
Business Communications Needs
Did
Incoming Business Communications
PDC
Outgoing Business Communications
Internal Call Movement
Data Communications
Page
Growth & Rearrangement
Page
Conclusions
List of Figures
Smdr
Starlan
BIS
SAT
LED
Considerations
Administration Requirements
Description
Interactions
System Features
Feature Name Type
Feature Name
Network Features
Data Features
Feature
Station Features
Feature Name SINGLE-LINE Multiline Terminal Button Label †
Attendant Features
Feature Name Console Button Label † Type
Account Code Entry
Interactions
Attendant Call Extending
Selector Console optional
Attendant CAMP-ON
Interactions Call Coverage/Direct Group Calling DGC If
None
Attendant Cancel
Attendant CONSOLE, Direct Trunk
Direct Trunk Attendant Console
Dual Console Operation
Position Busy
System Assign Primary Secondary Attendant
Direct Trunk Attendant Console Connections
Attendant CONSOLE, Switched Loop
Fixed Buttons Figure
Programmable Feature Buttons Figure
Attendant Message Waiting Attendant Message Waiting Used by
DSS
Display Figure
Switched Loop Operation
Console Buttons and Display
Answering a Call on a Loop Button
Placing a Call on a Loop Button
Call Types
Ringing
Attendant Features
Call Originations
Switched Loop Attendant Console Connections
Attendant Direct Extension Selection
Model 23A1 Attendant Direct Extension Selector Console
Considerations
Attendant Direct Extension Selector Console Connections
Attendant Display V2 Slac Only
Call Information Display
Incoming call from a system user
Incoming did call
Incoming coverage call
Call from console to system user
Returning parked call
Outgoing trunk call
Conference 3
Conference set up by attendant
Inspection Mode
Conference 4
Timer Functions
Attendant Forced Release V2 Slac Only
Only
Join
Attendant Message Waiting
Systems with Switched Loop Attendant Consoles Slac
Systems with Direct Trunk Attendant Consoles Dtac
Call Coverage
Administration Requirements
Manual Release
Automatic Release
Interactions
Attendant Return Coverage on Busy
Administration Requirements
Attendant Return Coverage on DON’T Answer
Administration Requirements
Attendant Source and Destination V2 Slac Only
Attendant Splitting ONE-WAY Automatic
Systems Technician
Automatic Intercom
Administration Requirements
Automatic Route Selection ARS
ARS Flow Chart
ARS Routing Pattern Table
FRL
Automatic Route Selection Flow Chart Sheet l
Automatic Route Selection Flow Chart Sheet 2 0f
Considerations
ARS
Hardware Requirements
Automatic Route Selection Routing Pattern
BUSY-TO-IDLE Reminder
Call Accountability
Call Accounting
Page
Facility Code #190-#199 is identified in this field
Call Accounting System CAS
CAS Model
CAS Models 200, 300, 500,
Page
AT&T Call Accounting Systems
CAS Model Stations Account Codes
Date Time
DUR FAC STN Account PDC
Ascii Character Description Valid Position Characters
Column Number
Ascii Character Description Position
12. Smdr Call Record Header Format
Z21OA
Adapt
15. Smdr Output Equipment -On-Premises Switched Connections
16. Smdr Output Equipment-Off-Premises Direct Connections
17. Smdr Output Equipment-Off-Premises Switched Connections
Standard Group Coverage
DGC Group Coverage V2 only
Page
Administration Requirements Standard Group Coverage
Interactions DGC Group Coverage V2 Only
Administration Requirements DGC Group Coverage V2 Only
Sent to coverage
Call COVERAGE-INDIVIDUAL
Call Coverage -Group Unanswered
Call Following Forwarding
Interactions
Call Park
Considerations
Attendant Selector Console Assign Call Park buttons
Directed Call Pickup
Group Call Pickup
Administration Requirements
Call Progress Tones
Outward Restriction
Facility Access Restriction
Toll Restriction
ARS Restriction
Hardware Requirements
Data call or place Data call
Voice call V2 only
EXit Change options View options
Options Current Default
Options
Hangup
Partial List of Permissible Data Port TN726 Options
Option Definition
Host Modem Computer Users
18. Communications Access Manager Architecture
Page
Single-Line Voice Terminals
Multiline Voice Terminals
101
Extended Stations An
102
All Multiline Terminals
Switched Loop Attendant Consoles
Multiline Voice Terminals except Slac
103
104
Data Call Setup
DTE Devices
Data Endpoints
106
Ascii Data Terminal With Keyboard
Data Terminal Without Ascii Keyboard
107
DCE Devices
Host Computer Endpoint
Analog Data Endpoint
108
Data Endpoint States
Data Call Processing Modes
Connecting Configurations
Controlling Features
111
Pause
Dialed Characters
Dialing Correction
112
Answering Endpoint
End-to-End Signaling
Call Disposition
113
114
Interactions End-To-End Signaling See above text
115
Dial Code Assignments
116
Data Dial Codes DDCs
Voice Terminal Directed Features
PDC to Voice Terminal Association
Direct Inward Dial did Number Assignments
118
20. Dictation System Connections FCC Registered
119
21. Digital Tape Unit
120
121
122
123
Transfer For
124
125
23. Delay Announcement Equipment Connections FCC Registered
126
127
128
129
Access to Paging Zones and DGC Groups
130
131
132
133
134
Making a Data Call
Activating Expert Mode
135
User Changeable Options
Activating the Third-Party Call Setup Feature
Dial
Examples
Interactions Command Mode
Command PE
Command MY
137
Conference
138
139
24. External Alert Connections
140
25. Supplemental Alert Adapter Connections
141
BIS and Hfai Voice Terminals
Calls Eligible for Hands-Free Service
142
Voice Terminals without HFUs
Voice Terminals with HFUs
143
144
500A/502A Headset Adapters
145
MET Headset Adapter
146
147
148
149
150
151
152
153
154
Ringing Line Preference
Prime Line Preference
155
Preselection
156
Use Line Status Meaning Red LED Green LED
L-USE Indications
LED Indications
157
158
159
Message Center Call Types
Console Configurations
Message CENTER-LIKE Operation V2 Slac Only
160
161
Call Coverage Message Waiting
Attendant Message Waiting
162
Station-To-Station Message Waiting
163
164
Calling Restrictions
165
166
167
30. Music-On-Hold Equipment Connections FCC Registered
168
31. Music-On-Hold Equipment Connections Non-Registered
169
Directed NS
170
Trunk-Answer-from-Any-Station
171
172
AT&T
173
32. Delay Announcement Equipment Connections FCC Registered
174
175
176
177
178
179
180
Calls Placed to a PDC
181
Calls Placed to a Floating PDC
182
Direct Station Selection
183
184
185
186
Facility
187
188
189
190
35 B Emergency Transfer Unit ETU
36. Emergency Transfer Unit Connections
192
37. Multiple ETU Arrangements
193
CHAR. Used in Personal Speed Dialing Numbers
Special Characters
Char Used in Repertory Dialing Numbers
194
Transmits an actual
Char Used in Personal Speed Dialing Numbers
195
To Program a Number by Using the Switch
To Program a Number by Using a Code
196
197
198
199
200
201
202
203
204
205
Speaker
S101A/S102A Speakerphone PEC 3163-HFU
4A Speakerphone System
207
38. Speakerphone Adjuncts
209
S102A
210
41. Speakerphone Connections For 12-Button MET Sets
211
Char Function
System Speed Dialing
CHAR.FUNCTION
212
Personal Speed Dialing
213
214
Access
System 25 Starlan Network Access Access
215
Starlan Interface Circuit Pack
Communications Access Manager CAM
216
Calls from System 25 to the Starlan Network
Starlan Network View of System
System 25 View of a Starlan Network
217
Wiring
218
219
ZTN78
220
Common Administration default
Administrable Parameters
Individually Administrable default
ATL Adapters
Combinational Hunting Example
Linear Hunting Example
Circular Hunting Example
222
Call Coverage Station
223
224
Centralized Administration
225
226
SAT Connection Information
Backspace Return
227
45. Model 703 System Administration Terminal
228
229
230
TYPICAL-103A Connection Block
48. SAT On-Premises Switched Connections
231
49. SAT Off-Premises Direct Connections
232
50. SAT Off-Premises Switched Connections
233
Permanent System Alarms
System Maintenance
System Errors And Alarms
Error s
Automatic Maintenance Tests
Error Logs
235
Trunk Number C o n d A t i o n
Tandem Trunking
S c r i p t i o n
236
237
T e r a c t i o ns
Test
N s i d e r a t i o ns
238
Data Terminal source
THIRD-PARTY Call Setup
Voice Terminal source
239
Setting Up a Third-Party Call
240
AT&T Starlan Network Access
Expert Mode
Administration Requirements Data Port
T e r a c t i o ns Call Coverage
TIE Trunks
242
243
Touch Dial Pads
TOUCH-TONE and Dial Pulse Services
Touch-Tone Dial Pads
244
T e r a c t i o n s
245
246
Data Call Preindication
Data Call Origination Using Transfer to Data
Transfer to Data
247
248
Trunk Groups
249
S t r i c t i o n s e e Calling Restrictions
N s i d e r a t i o n s
C i l i t y
250
251
TRUNK-TO-TRUNK Transfer
252
User Changeable Options Definition
User Changeable Options
253
51. Command Mode Menu Tree
Changing Options-General
Viewing Options
255
EXit Low
Changing Data Port Speed
256
Interactions Expert Mode
257
Virtual Facilities
258
Examples of Virtual Facility Numbers
A R a C T E RF U N C T I O N
259
Example
Accessing a Virtual Facility
260
261
ATL
TDM
MET
List of Tables
Digital Switch
System 25 Digital Switch
Common Control
Call Processor Circuit Pack ZTN82 or ZTN128
Call Processor ZTN82 or ZTN128 Circuitry
Interrupt Level
Memory Circuit Pack ZTN81 or ZTN127
Timing and Control Logic Circuit
Switching Network
TDM Bus Time Slot Generation Not a Timing Diagram
Physical Characteristics
Electrical Characteristics
Time Slot No Function
TDM Bus Diagram -Three Cabinet System
Port Circuits
SINGLE-LINE Voice Terminals
SMD
Asynchronous Data Unit CAS Call Accounting System
Translated, and yellow circuit busy
Port Circuit Pack Common Circuitry
Ground Start Trunk ZTN76
Unique Ground Start Trunk ZTN76 Circuitry
Loop Start Trunk ZTN77
Unique Loop Start Trunk ZTN77 Circuitry
10. Unique Tip Ring Line ZTN78 Circuitry
Page
ATL Line ZTN79
Port Circuits
11. Unique ATL Line ZTN79 Circuitry
Data Line TN726
12. Unique Data Line TN726 Circuitry
MET Line TN735
13. Unique MET Line TN735 Circuitry
Analog Line TN742
14. Unique Analog Line TN742 Circuitry
Page
Did Trunk TN753
15. Unique did Trunk TN753 Circuitry
Tie Trunk TN760B
16. Unique Tie Trunk TN760B Circuitry
Signaling Transmit Receive Type ON-HOOK OFF-HOOK
Signaling Type Summary
TN760B Tie Trunk Preferred Signaling Formats
Auxiliary Trunk TN763
18. Unique Auxiliary Trunk TN763 Circuitry
Starlan Interface ZTN84
Network
Saki
Service Circuit ZTN85
System Resources
On-Board
Page
19. Service Circuit ZTN85
Tone Detector TN748
20. Tone Detector TN748 Circuit
Capability Data Module Mode
Pooled Modem TN758
Page
Maintenance Software
Switched Services Software
Administrative Software
Memory Allocation
Memory Circuit Pack
Software Partitioning
Call Processor Circuit Pack
Port Circuit Packs
Step-By-Step Call Description
22. System Software Partitioning
On the terminal
ADU
List
Hfai
SIP
Madu
Hardware Description
System Cabinets J58901A1
System 25 Cabinets J58901A-Three Cabinet System
System Cabinet J58901A-Rear View
Cabinet Address Plug
Cabinet 1 Control and Port Circuits
Cabinets 2 and 3 Port Circuits
System Circuit Pack Configurations
Total Port Circuit Packs Per System
Optional Circuit Packs
Circuit Packs
Required Circuit Packs
System Resource Circuit Packs
Station Port Circuit Packs
Trunk Port Circuit Packs
Circuit Pack Compatibility
Circuit Pack Features
System Circuit Packs
Title Circuit Number Circuit Pack Type Ports
Model 500 Series
Voice Terminals
Single-Line Voice Terminals
PFT
554BMPA
Summary of Voice Terminals
Terminal Circuit Pack Type Model Description Interface
ZTN79
Model 2500 Series
Mode1 2500 Series Analog Voice Terminals
Model 7101A MD PEC 3170-00M
Mode1 7101A Analog Voice Terminal
Speakerphone
Speakerphone Voice Terminal
Feature Operations
Single-Line Voice Terminal Connection Information
Multiline Voice Terminals
7300H Series Voice Terminals
Button Voice Terminal 7302H01D PEC
Button Voice Terminal 7302 HOlD
Button Voice Terminal 7303H01D PEC
Button Voice Terminal 7303HO1D
Button Voice Terminal 7305H01D MD PEC
Button Voice Terminal 7305HO1D MD
For General Use
Button Deluxe Voice Terminal 7305H02D PEC
For Use as a Direct Trunk Attendant Console
10 -Button Deluxe Voice Terminal 7305H02D
Hfai
11. BIS Voice Terminal 7305H03B
Feature Buttons only 12 have associated LEDs
For Use as a Switched Loop Attendant Console
12. BIS Voice Terminal with Display 7305H04B
Page
13. Hfai Voice Terminal 7309HO1B
Ten Button Multibutton Electronic Telephone MET 2991 C/D05
14. Ten Button MET Set 2991C05
Ten Button MET With Built-In Speakerphone 2993C04
15. Ten Button MET With Built-In Speakerphone 2993C04
Twelve Button MET Set 7203M
16. Twelve Button MET Set 7203M
Multiline Voice Terminal Connection Information
Voice Terminal Adjuncts
Voice Terminal Adjunct Connection Information
Voice Terminal Adjunct Power Supplies
Supplemental Voice Terminal Power Supplies
Unit Output For USE with
Asynchronous Data Units AD US
17. Asynchronous Data Unit ADU ADU Connection Information
Asynchronous Data Units
Unit PEC Feature
Z3A1
Optional Power Equipment
Uninterruptible Power Supply
346 Modular Bulk Power Supply
AC Power Line Surge Suppressor
Trunk Access Equipment TAE
18. Trunk Access Equipment TAE Connections
617A Panel
Station Interconnect Panel SIP
Adapters
19 a Station Interconnect Panel
20. Typical SIP Connections
Connectivity Figures
21. On-Premises Single-Line Voice Terminal Connections
22. Out-Of-Building Single-Line Voice Terminal Connections
SINGLE-ENDED 25 Pair Cable A25D
7300H Type Voice Terminal
Ground Wire
26. Ten Button MET Set Connections
TYPICAL- 103A Connecting Block
ZTN78 TIP Ring Line CP
103A Connecting Block
30. Typical Madu Connections
31. Z3A1/2/4 ADU Local Power Connections
Technical Specifications
Hardware And Software Parameters
Total
Hardware And Software Parameters Contd
Traffic Data Simultaneous
Equipment Circuit Unit Load Pack PER Port
Unit Loads
Unit Loads Note
ZTN79 BIS
Cable Distance Limitations
Supporting Gauge Wire Circuit
Pack Feet Meters ZTN78
5106mm
Pack Feet Meters
Data Terminals RS-232 Connected To Asynchronous Data Units
Data Rate Gauge Wire
Feet Meters
Tones
Indicator Lamp Signals
Lamp Signal
Tone Frequency
Station Type Circuit Pack Data Terminal Specifications
Data Terminal Ports Note
Data Requires Z3A1 Terminal
Data Terminals
Z3A4 ADU
Dtmf
REN
Port Specifications Contd Voice Terminal Ports Contd
Station Type Circuit Pack Specifications
Trunk Ports Trunk Type Circuit Pack Specifications
Ground Start
Calling Traffic
Recommended Central Office Trunk Facilities
Voice Light Medium Heavy Terminals Traffic
Loss
Analog Transmission Characteristics
Signal Level Distortion Level
Connection Type Loss
Impulse Noise
Loop Resistance
Connection Bandwidth 64 Kbits Steady State Noise Level
Single Frequency Return Loss Talking State
Environmental Requirements
Floor Plans And Layouts
Typical System 25 Equipment Area Floor Plan
Typical System 25 Equipment Area Elevation Plan
Temperature and Humidity
Wall Space Requirements
Lighting
Air Purity
Electrical Noise RFI
AC Power Requirements
Single Cabinet System
AC Power Distribution Multiple Cabinet System
Grounding
Lightning Protection
Parts Listed by PEC
Part
Apparatus Code Comcode ZTN76
Merlin VT
Part of 62512 62512 62512
Z3A5 ATL ADU
10B ETU
MOH
Z3A4 ADU
Starlan Network
PEC Description Apparatus Code
CAM
NEU
PEC Description Apparatus Code Comcode
500BMPA
Merlin BIS VT
S C R I P T I O N
Merlin Hfai VT
Irob
PEC
CPU/MEM
Parts Listed by Comcode
Comcode PEC Description
M C O DE PEC Description Apparatus Code
M C O DE P E C Description Apparatus Code
Merlin BIS
Merlin Hfai
105341382 1020-S91
Comcode PEC Description Apparatus Code
AT&T Starlan Network
Basic Manuals
Supplementary Material
Descriptions of Basic Manuals
Terminal Operations Manual
Planning Manual
Reference Manual
User Guides 700 Series
Appearance
Administer
Analog Voice Terminals
Asynchronous Data Transmission
Bit Binary Digit
Auxiliary Equipment
Auxiliary Trunk
Bridge Bridging
Bus, Time Division Multiplex
Class of Service COS
Common Control Switching Arrangement Ccsa
CCS Hundred Call Seconds
Coverage Path
Console
Coverage Call
Coverage Point
Data Terminal Equipment DTE
Delay-Dial Tie Trunk
Data Module
Digital Data Endpoints
Facility physical
Feature
Feature Button
Foreign Exchange FX
In-Use Lamp
Home Numbering Plan Area Code Hnpa
Immediate-Start Tie Trunk
Intercept Tone
Multilane Voice Terminal
Multifeature Single-Line Voice Terminal
Modem Pooling
Multiplexed
Personal Dial Code
Parameter
Peripheral Equipment
Pickup Group
Public Network
Random Access Memory RAM
Protocol
Queue
Software
Switch
Switchhook
Split
Time Division Multiplex Bus
Wide Area Telecommunications Service Wats
Tie Trunk
Tone Ringer
Service
Write Operation
Index
10-1
10-2
10-3
Line Contd
10-4
Starlan Network
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