ATT System 25 Reference Manual

PARTS INFORMATION
COMCODE PECDESCRIPTIONAPPARATUS CODE
527840102  2614-100AT&T STARLAN NETWORK
Network Access Unit (NAU)
845412956  No PECCPU/MEM*
Interconnect Cable
845416379  P/O 6250-031  Fans (2)
P/O 62501
845416635  P/O 6250-031  Address Plug*
P/O 62501
845875772  P/O 6250-031  SLAC Graphics*
P/O 62525A
Overlays (2)WP90677 L1
* Not Available.
7-15 

REFERENCE DOCUMENTATION
Basic Manuals
Software Packages
Integrated Solution Documents
Descriptions of Basic Manuals8-1
8-1
8-2
8-2
-i- 

REFERENCE DOCUMENTATION
REFERENCE DOCUMENTATION
System 25 is supported by a complete set of basic and supplementary documentation and
optional software.This section provides a brief summary of the available material for
Release 3 (R3).
Basic Manuals
l An Introduction to System 25                                                                                      
l R3 Administration Manual                                                                    
l R3 Implementation Manual...

REFERENCE DOCUMENTATION
Integrated
l Integrated
l Integrated
l Integrated
l AT&T Call
Solution Documents
Solution User Guide                                                                                                 555-540-715
Solution Instructor’s Guide555-540-717
Solution Student Guide      555-540-718
Accounting System Reports Guide                                                  
775-413
Descriptions of Basic Manuals
An Introduction to System 25
Provides a summary of System 25 features,...

REFERENCE DOCUMENTATION
Reference Manual
The principal technical reference for users of System 25. It provides reference material for
sales support, system configuration and operation and for the system technician. It contains
a comprehensive description of the system, emphasizing features, components and overall
capabilities and capacities.
Terminal Operations Manual
Designed to help the System Administrator better understand System 25 voice terminal and
data terminal operation.This manual contains the...

GLOSSARY
GLOSSARY
This section provides explanations for acronyms and definitions of terms used in this
manual.
ADU: (Asynchronous Data Unit)
ARS: (Automatic Route Selection)
ASCII: (American Standard Code for Information Exchange)
Administer
To access and change the parameters associated with the services or features of the
system.
Analog Data Endpoint
Data endpoints with customer provided built-in or stand-alone modems. They do not
require the use of data modules (asynchronous data units) and are...

GLOSSARY
Attendant
The operator of the attendant console.
Attendant Console
l Direct Trunk or Switched Loop Attendant Console: An electronic call-
handling position with pushbutton control. Used by attendants to answer and
place calls and to manage and monitor some system operations.
l Direct Extension Selector Console: Provides the attendant with a visual
indication of the active or idle status of extension numbers assigned in the
system. Also allows the attendant to extend calls to system users by...

GLOSSARY
Bridge (Bridging)
The sharing of the same extension or line by two or more voice terminals.
Buffer
A circuit or component that isolates one electrical circuit from another. Typically, a
buffer holds data from one circuit or process until another circuit or process is ready
to accept the data.
Bus
A multi-conductor electrical path used to transfer information over a common
connection from any of several sources to any of several destinations.
Bus, Time Division Multiplex
See Time Division...

GLOSSARY
Central Office Trunk
A telecommunications channel that provides access from the system to the public
network through the local central office.
Channel
A communications path for transmitting voice and data.
Class of Service (COS)
Parameters used to define voice terminal, data, Remote Access, and trunk port
capabilities and restrictions.
Common Channel Signaling
Common channel signaling is an out-of-band signaling format intended to be a
substitute for conventional robbed bit signaling in DS1...

GLOSSARY
Covering User
The person at an alternate answering position who answers a redirected call (the coverage
receiver).
D4 Framing
D4 is the most prevalent framing format found in the T1 environment and is supported by
the D4 series channel banks.
DACS: (Digital Access and Cross-Connect)
DCE: (Data Communications Equipment) DDC: (Data Dial Code)
DDD: (Direct Distance Dialing)
DID: (Direct Inward Dialing)
DGC: (Direct Group Calling)
DMI-BOS (Digital Multiplexed Interface-Bit Oriented Signaling)
See...