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