ATT System 25 Reference Manual

GLOSSARY
Tone Ringer
A device with a speaker, used in electronic voice terminals to alert the user.
Translations
Specific information assigned to a terminal or to the system and customized for the
user.
Trunk
A telecommunications channel between two switching systems.
Trunk Group
Telecommunications channels assigned as a group for certain functions.
Trunk Port
The hardware providing the access point to the system switching network for each
circuit associated with a trunk.
Unit Load
A measurement used to...

GLOSSARY
Wide Area Telecommunications Service (WATS)
A service that allows calls to a certain area or areas for a flat-rate charge based on
usage.
Wink-Start Tie Trunk
After establishing a connection with a distant switching system for an outgoing call,
the system waits for a momentary signal (wink) before sending the digits of the called
number. Similarly, on an incoming call, the system sends the wink signal when ready
to receive digits.
Write Operation
The process of putting information onto a storage...

INDEX
INDEX
10-Button MET Set (2991 C/D05) 4-46
10-Button MET Set With BIS (2993C04) 4-48
12-Button MET Set (7203M) 4-50
2012D Transformer 4-56
2500 Series Voice Terminals 4-16
2526BMWG Voice Terminal 4-19
346 Modular Bulk Power Supply 4-61
420 Speakerphone Voice Terminal 4-21
4A Speakerphone 2-285, 4-18, 4-55
500 Series Voice Terminals 4-16
500A Headset Adapter 2-194, 4-55
502B Headset Adapter 2-194, 4-55
617A Panel 4-64, 4-65
7101A Voice Terminal 4-20
7302H01D Voice Terminal (5-Button) 4-24
7303H01D...

INDEX
Attendant (Continued)
Call Extending 2-14
Call Waiting 2-16
Camp-On 2-16
Cancel 2-18
Console, Connections 4-67
Console, Direct Trunk 2-19
Console, Switched Loop 2-24
Consoles 4-56
Direct Extension Selection (DXS) 2-34
Direct Extension Selector Console 2-34
DXS Console Connections 2-38
Features Table 2-7
Forced Release 2-39
Join 2-40
Message Waiting 2-41, 2-227
Position Busy 2-43
Release 2-46
Return Coverage On Busy 2-48
Return Coverage On Don’t Answer 2-50
Source and Destination 2-52
Splitting...

INDEX
Circuit Packs (Continued)
Optional 4-9
Pooled Modem (TN758) 3-35, 4-12
Required 4-8
Service Circuit (ZTN131) 3-31, 4-8
STARLAN Interface (ZTN84) 2-295, 3-26, 4-10
Station Port 4-9
Summary, System 4-7
System Resource 4-12
Tie Trunk (TN760B) 3-27, 4-11
Tip Ring Line (ZTN78) 3-30, 4-9
Tone Detector (TN748B) 3-34, 4-12
Tone Detector (TN748C) 4-12
Trunk Port 4-11
Circuitry Common to All Port CPs 3-9
Clock 2-220
CMS 2-91
Code, Personal Dial 2-252
COMCODEs 7-9
Command Mode 2-97
Menu Tree 2-351
Common...

INDEX
Data Port Endpoints, Option Profiles 2-100
DCE Devices 2-131
Delay Announcement
Direct Group Calling 2-150
Equipment Connections 2-151, 2-241
Night Service 2-240
Delayed Access 2-233
Dequeuing Tone 2-94
Description, System 1-1
Destination, Attendant Source and 2-52
DGC 2-147
DialAccess, Pooled Facility 2-258
Access to Message Waiting Indicators 2-139
Code Assignments 2-140
Code Personal 2-252
Plan 2-140
Dial Pads
Touch 2-340
Touch-Tone 2-340
Dial Pulse Services 2-340
Dial Tone 2-94
Dialing
Data...

INDEX
Features (Continued)
Attendant Camp-On 2-16
Attendant Cancel 2-18
Attendant Console, Direct Trunk 2-19
Attendant Direct Extension Selection 2-34
Attendant Forced Release 2-39
Attendant Join 2-40
Attendant Message Waiting 2-41
Attendant Position Busy 2-43
Attendant Release 2-46
Attendant Return Coverage On Busy 2-48
Attendant Return Coverage On Don‘t Answer 2-50
Attendant Source and Destinatlon 2-52
Attendant Splitting One-Way Automatic 2-53
Attendant System Alarm Indication 2-54
Automatic Intercom...

INDEX
Features Table (Continued)
Station 2-4
System 2-3
Flex DSS 2-158
Floor Plans And Layouts 6-1
Following 2-182
Forced
Account Code Entry 2-8
Release, Attendant 2-39
Forwarding 2-185
FPDC, Calls Placed to 2-183Inspection 2-201
Integrated Solution 1-3, 2-204
Interactions, Call Origination 2-31
Intercept Treatment With Reorder Tone 2-207
Intercom
Automatic 2-55
Hands-Free Answer On 2-191
Interdigit Timeouts 2-208
Interface
DS1 (TN767) 4-11
Interface, DS1 Facility 2-117
I-Use Indication
G
JGlossary 9-1...

INDEX
Manuals (Continued)
Administration 8-2
Implementation 8-2
Installation And Maintenance 8-2
Introduction to System 25 8-2
Reference 8-3
Terminal Operations 8-3
User Guides (700 Series) 8-3
Memory Allocation 3-39
Message Center-Like Operation 2-225
Message Drop Service 2-361
Message Waiting
Attendant 2-41
Indicator 4-55
Indicators, Dial Access to 2-139
Station-to-Station 2-317
Messaging Services 2-227
Attendant Message Waiting 2-227
Coverage Message Waiting 2-227
Dial Access to Message Waiting...

INDEX
Position Busy (Continued)
SLAC 2-28
Power
Equipment, Optional 4-61
Failure Transfer (PFT) 2-262
Requirements, AC 6-8
Supply, 4-61
Supply, KS-22911 4-56
Supply, Uninterruptible 4-61
Unit, 85B1 4-56
Preference
Prime Line 2-215
Ringing Line 2-215
Preindication, Data Call 2-345
Preselection 2-216
Price Element Codes (PECs) 7-1
Prime Line Preference 2-215
Principal Station 2-67
Priority Ringing 2-171
Program 2-267
Programmable Feature Buttons 2-26
Protection Requirements, Lightning 6-10
Q
Queuing,...