ATT System 25 Reference Manual

FEATURES AND SERVICES
Attendant Return Coverage On Don’t Answer
Description
This feature allows unanswered calls extended by the attendant to be returned to the
attendant for additional service.
Calls that are not answered after a administered number of rings will transfer ringing to the
Return-On-Don’t-Answer (RTN-DA) button on a Direct Trunk Attendant Console (DTAC) or to
a LOOP button on a Switched Loop Attendant Console (SLAC). If the called voice terminal
has Coverage, the counting of rings for...

Attendant Return Coverage On Don’t Answer
Coverage:
l DTAC only—Whenever a DTAC attendant is a coverage receiver for a particular
coverage group and a call is placed from the attendant position via the Start button
or the Selector Console to a voice terminal in that group, the Coverage-Group
(COVER-GRP) button on the Attendant Console will not track the call (COVER-GRP
button status LED will not flash). If the call remains unanswered, it will return to the
Attendant Console on the RTN-DA button rather...

FEATURES AND SERVICES
Attendant Source and Destination (SLAC Only)
Description
This feature allows the attendant, while extending a call, to switch back and forth between
the calling party (the source) and the called party (the destination) before connecting them
together.
Pressing the SOURCE button on the SLAC after the called party has been reached has these
results:
l The called party (the destination) is put on hold.
l The attendant is reconnected to the calling party (the source)
l The green status...

Attendant Splitting One-Way Automatic
Attendant Splitting One-Way Automatic
Description
This feature allows the attendant to converse privately with a called party while the calling
party is split away on hold.
When the attendant presses START (or a DXS button) to extend an incoming call to a called
party, the calling party is automatically split away from the connection and placed on hold.
This allows the attendant to talk privately with the called party before extending the call. The
attendant can then...

FEATURES AND SERVICES
Attendant System Alarm Indication
Description
This feature provides a visible alarm on the Attendant Console to alert the attendant to
problems detected by the system software. The ALARM LED on the Attendant Console will
flash whenever a detected fault persists longer than four minutes, or if more than five
transient faults per hour are detected.The alarm indication should be reported immediately to
your AT&T Systems Technician.
The alarm type that causes an alarm indication is...

Automatic Intercom
Automatic Intercom
Description
This feature allows a multiline voice terminal user including ATL cordless telephone (or
attendant) to place and answer calls to and from another station by use of a dedicated
button appearance.
Automatic Intercom provides a private path between two designated multiline voice terminals.
To place an Automatic Intercom call, the calling party presses the Automatic Intercom (AUTO
ICOM) button and goes off-hook. The calling party hears ringback tone and the...

FEATURES AND SERVICES
Interactions
The following features interact with Automatic Intercom.
Attendant Position Busy:The inactive attendant is permitted to place Automatic Intercom
calls. Automatic Intercom calls to an inactive DTAC where the AUTO ICOM button is located
in one of the two rightmost button columns will not ring at the console, nor can they be
covered by the active attendant.However, Automatic Intercom calls to an inactive SLAC will
ring there.
Bridging of System Access Buttons:Calls on...

Automatic Route Selection (ARS)
Automatic Route Selection (ARS)
Description
This feature provides for the routing of calls over the telecommunications network based on
preferred routes (normally the least expensive route available at the time the call is placed.)
An ARS pattern can be composed of two subpatterns (time of day determines which subpattern is
selected), each consisting of up to three routes, associated Facility Restriction Level (FRL) codes
(described below), and CO overflow flags. A route...

Features and Services
l Calls made to specified COs or seven-digit telephone numbers within the Home Number
Plan Area (Home Area Code). These calls are routed as specified in the Home Area Code
Exception Lists, or else via the Area Code Routing Table, or (by default if not otherwise
specified) the local CO facility.
l Calls made to Area Codes outside the Home Area Code, sometimes referred to as Foreign
Area Codes (FNPAs). The route selected depends on the type of call, as follows:
— FNPA special number...

Automatic Route Selection (ARS)
Calls are checked to determine if they are international calls or operator calls. Dialed numbers “01”
or 011 signify international calls, “0” plus a number other than “1” signify operator calls (00 calls
signify Intra-Lata operator calls). If the call is an international call and the terminal is not restricted,
the international routing pattern is selected and the call routed accordingly. Operator calls are
routed via the local CO facility.
Calls within the Home Area Code...