ATT System 25 Reference Manual

FEATURES AND SERVICES
Automatic Intercom: Calls on Automatic Intercom buttons on the principal station are not
accessible from bridged call appearances.
Automatic Route Selection (ARS): When a station user originates a call on a BA button and
dials the ARS access code. the call is completed according to the restrictions assigned to
that station. The restrictions of the principal and the other bridging stations have no effect.
Callback Queuing: Calls originated on Bridged Access (BA) buttons can be...

Bridging of System Access Buttons
Direct Group Calling (OGC): DGC calls arriving on SA buttons at a principal station can
receive bridging treatment at a bridging station.
Direct Station Selection (DSS): Calls from DSS or Flex DSS buttons on the principal station
are not accessible from bridged appearances.
Exclusion: If a principal or bridging station presses the EXCLUSION button during a call, all
other internal stations on the call will be dropped.In addition, Exclusion will prevent any
other internal...

FEATURES AND SERVICES
Park: If a station is active on a bridged call appearance and activates Park, the call is parked
on the Personal Dial Code (PDC) number of the principal station, not of the bridging station.
If the parked call is not answered, it will return on the principal’s SA button.
Personal Speed Dialing: Personal Speed Dialing is a station-oriented feature. If a station
dials a Personal Speed Dialing code (#20-#39) while off-hook on a BA button, the system
will handle this call exactly as if...

Bridging of System Access Buttons
If two bridged stations attempt to originate a call at the same time, and if the call is
completed, the PDC number of the station that dialed the first digit is placed in the SMDR
records under the STN column.
Transfer: A call can be transferred from a bridged call appearance using the usual transfer
operations. When a call is held for transfer by pressing the TRANSFER button, an idle
System Access button or an idle System Access-Originate Only button, if available, is...

FEATURES AND SERVICES
Busy-To-Idle Reminder
Description
Busy-to-Idle Reminder alerts a multiline voice terminal user by a single ring as soon as a
busy internal station, DGC group, or facility (trunk group) becomes available. The feature
can be activated only for stations, DGC groups, and trunk groups represented on the
terminal by DSS, FLEX DSS, AUTO ICOM, and FACILITY buttons.
Before making a call to a station, the multiline voice terminal user can check the green status
LED of the station button. If...

Call Accountability
Call Accountability
Description
This feature allows calls made by system users from other users’ stations to be charged to
the callers’ own “home” Personal Dial Code (PDC).
To charge a call to the home PDC, the user dials ## followed by the PDC immediately upon
receiving first dial tone to place a call. When second dial tone is returned, the user dials the
desired number in the normal way.
After completion of the call, the SMDR record will reflect the “accountable” PDC (that is, the...

FEATURES AND SERVICES
Call Accounting System (CAS)
Description
Call Accounting is the collecting, processing, and use of information about all trunk calls
placed from and received by System 25. It is intended to help customers control telephone
use and manage associated costs.
Detailed call data is available at Interface Port 2 of the Digital Switch’s CPU/MEM Circuit
Pack. This data can be fed to a Call Accounting System (CAS) for preparing a variety of cost
estimate reports and for providing management...

Call Accounting System (CAS)
l Multi-Function Mode: Allows the user to print reports, edit files, and run other PC-based
programs while the CAS continues to collect and buffer call records in the background. The
user must enter the Dedicated Mode to process calls and generate reports.
The CAS performs three main functions; (1) call record processing, (2) report generation, and (3)
CAS system management. In addition, a limited directory lookup and message center is provided.
The following is a brief...

Features and Services
The following table summarizes CAS station and account capacities.
AT&T CALL ACCOUNTING SYSTEMS
CAS ModelStationsAccount Codes
2001005000
300
1505000
5005005000
2000200015000
Refer to the CAS documentation supplied with the software package for additional information.
Considerations
The CAS provides customers with an efficient tool to control and manage their telephone usage and
costs. The information available can be used to facilitate cost allocation, traffic analysis, and abuse...

Call Accounting System (CAS)
l DTR (data terminal ready) required from printer.
l RTS (ready to send) and CTS (clear to send) not required.
l No flow control.
Refer to Figures 2-11 and 2-12 for typical CAS connection information.
SYSTEM 25PART OF
CABINETOCTOPUS
CABLE
PART OF
SIP
ZTN130C2Z210A>CPU/MEMADAPT.
C1
355A/AF
ADAPT.CALL
ACCOUNTING
SYSTEM
LEGEND:
C1 - MODULAR CORD (D8W-87) - PEC 2725-07G
C2 - OCTOPUS CABLE (WP90780) - PEC 2720-05P355A ADAPTER -RS-232 PLUG TO M0DULAR JACK - PEC 2750-A24
355AF...