ATT System 25 Reference Manual

							FEATURES AND SERVICES
Figure 2-4.
Buttons and Display of BIS-34D
Ringing
The SLAC receives normal ringing on incoming calls. Abbreviated alerting (one short burst
of ringing), accompanied by a change in the LOOP button wink rate, indicates to the
attendant that a held call has exceeded the preset hold time interval. Calls on hold can be
administered to continue on hold after the second timeout or to return to console queue.
Abbreviated alerting can also be administered as a reminder for new calls entering the
queue.
2-30 
						

							Attendant Console, Switched Loop
Considerations
One System 25 configuration can support either one or two SLACs or one or two DTACs,
but not a combination of a SLAC and a DTAC.
The optional Direct Extension Selector Console can be connected to a SLAC to provide
busy/idle status of inside stations and quick calling of their extension numbers. In a system
with two consoles, either or both can have a Selector Console as an adjunct. The Selector
Console is covered in the “Attendant Direct Extension Selector Console” feature description.
For information on related Attendant Features (Table 2-E), refer to the individual feature
descriptions.
Interactions
The following features interact with Switched Loop Attendant Console.
Attendant Console, Direct Trunk: The SLAC cannot operate in the same system with a
Direct Trunk Attendant Console.
Bridging of System Access Buttons:The SLAC cannot serve as a principal or a bridging
station.
Callback Queuing: The attendant can queue calls that are extended using the normal
START-RELEASE button operation. However, calls originated using only the START button
(no other call put on hold) cannot be queued.
Call Originations:Placing a new call from an active console causes interactions with the
currently active call. At a console that has the default Automatic Release feature, the active
call is dropped when the attendant presses a new LOOP button. The new loop becomes the
active one; dial tone is provided, and the attendant can dial a number. If the optional
Automatic Hold feature is administered, the interrupted call is put on hold instead of being
lost.
If a new call is originated with the START button or at the Selector Console, the active call is
split. The current loop becomes the active loop for the new call. The display shows the split
call information. This is the normal operating procedure for extending calls.
When a REP DIAL button is pressed while the console is active on a call, the active party is
not dropped or split, and the display does not change. If the active call is with an inside
station, the digits generated by the REP DIAL button are ignored. But if the active call is on
an outside trunk, then pressing REP DIAL will cause the digits stored on the button to be
sent out over the trunk (“thru-dialing” or “end-to-end signaling”).
When an active call is put on hold manually by operation of the HOLD button, the system
does not automatically select a new loop for placing a call. In this case, the attendant can
select a new loop by pressing an idle LOOP button, then dial a number. Pressing a DSS, Flex
DSS, Auto Intercom, Last Number Dialed, REP DIAL, or Selector Console button will select a
new loop and dial a number in a single operation.
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							FEATURES AND SERVICES
Call Waiting: Calls cannot wait at the SLAC
Callback Queuing: Calls that are originated without use of the START button can be queued
for busy facilities.They are treated like calls from standard multiline stations. A queued call
remains on the LOOP button where it was originated and does not return via the common
queue.
Headset Adapter: Connection of a headset adapter to the SLAC allows the optional use of a
headset instead of the handset in handling calls.
Administration Requirements
Attendant Console (Voice Terminal) Port:
l Assign telephone type.
l Assign Prime Line Preference to one of the LOOP buttons; default = top LOOP
button.
l Assign flexible buttons.
Trunk Port:
l Assign priorities to calls directed to the console queue.
l Assign the attendant(s) to handle calls from this trunk.
l Assign unique trunk identifiers.
System:
l Assign DID number for attendant “0” treatment.
l Assign Coverage Group number(s) for which the console queue is to serve as a
receiver.
l Assign Automatic Hold or Automatic Release.
l Enable ring reminder when calls enter queue.
l Assign Hold timer interval.
l Assign destination of held calls that time out.
l Assign call types and attendant specification for Message Center-Like operation in a
two-console configuration, if applicable.
l Assign call type priorities and attendant specification.
l Assign Position Busy “backup” station, if applicable.
2-32 
						

							Attendant Console, Switched Loop
Hardware Requirements
Each console requires a port on a ZTN79 ATL Station circuit pack.
Figure 2-5 provides a connection diagram for the SLAC.
SYSTEM 25
CABINET
PART OF
OCTOPUS CABLE
ZTN79
HYBRID
LINE CPPART OF SIP
C2SIPW1SWITCHED LOOP
C1
ADAPT .B1ATTENDANT
CONSOLE T1
LEGEND:
B1 -
C1 -
C2 -
T1 -
W1 -
*-
RANGE :
TYPICAL-103A CONNECTING BLOCK*MODULAR CORD (D8W-87) - FURNISHED WITH SETOCTOPUS CABLE (WP90780) - PEC 2720-05P7305H04C BUILT-IN SPEAKERPHONE (BIS) WITH DISPLAY VOICE TERMINAL - PEC 3162-DIS
OR 7317H01A DELUXE BIS WITH DISPLAY VOICE TERMINAL - PEC 3167-DSB
4-PAIR INSIDE WIRING CABLE*
FURNISHED BY INSTALLER
WITHIN 2000 FEET OF SYSTEM CABINET (LOCAL POWER REQUIRED >1000 FEET)
Figure 2-5. Switched Loop Attendant Console Connections
2-33 
						

							FEATURES AND SERVICES
Attendant Direct Extension Selection
Description
This feature permits the attendant to extend calls tostations by pressing one or two buttons
instead of pressing START and dialing the extension number. Each attendant console in a
system can have an associated Direct Extension Selector Console. A Selector Console can
be used with either a Direct Trunk Attendant Console (DTAC) or with a Switched Loop
Attendant Console (SLAC).
The Selector Console is also used by the attendant for simply calling inside stations, in
addition to “extending” calls.
The Selector Console (Figure 2-6) has an array of 100 Direct Extension Selection (DXS)
buttons plus seven Group Select buttons and a Test button. The DXS buttons are labeled 00
through 99. Default assignments for the Group Select buttons are 200-299, 300-399, etc., up
to 800-899, but they can be assigned any hundreds group in the dialing plan. To select an
actual extension number, the user presses a Group Select button for the hundreds group
and a DXS button for the last two digits.
Pressing a DXS button when off-hook on an incoming call is equivalent to pressing START
and dialing a station.Such action will busy out the Start facility until the call is released. The
Selector Console can be used to monitor the on-hook/off-hook status of stations in the
system. If the attendant, while on-hook, presses a Group Select button, the Group Select
LED and the LEDs of any busy stations in that group will light steadily.
The DXS button LED and the Group Select button LED associated with a particular station
will flash when one of the following events occurs:
l The station calls the attendant
l A call extended by the attendant to the station returns on a RTN-BUSY or RTN-DA
button (DTAC only) or on a LOOP button (SLAC only)
l The station is covered and a call to it is redirected to a COVER button (DTAC only) or
to a LOOP button (SLAC only).
The LEDs stop flashing when the call is answered.When the attendant answers a returning
call, the LEDs will return to the state that reflects the current on-hook/off-hook status of the
station.In all of the above cases, the Group Select lamp associated with the current
“hundreds page” remains lighted steadily.
An outside call can be parked via the Selector Console by pressing one of the eight DXS
buttons that can be designated as Park extension numbers. On the DTAC, the status LED of
the parked call winks (to indicate that the call is on hold) and the status LED on the Selector
Console lights steadily. On the SLAC, the call is removed from the attendant console, with
the Selector Console LED lit steadily.
A call parked via the Selector Console and not picked up within an administered period (0-
240 seconds; default = 120) will return to the console.The status LED of the parked-on
button will flash while the call is ringing the attendant.
2-34 
						

							Attendant Direct Extension Selection
GROUP SELECT BUTTONSTESTAND ASSOCIATED LEDSBUTTON
NOTE :STATUS LEDs are located
to the left of each DXS
button (00-99) under
transparent front cover.
100 DXSBUTTONS
WITH LEDS
Figure 2-6.
Model 23A1 Attendant Direct Extension Selector Console
2-35 
						

							FEATURES AND SERVICES
A call parked via the Selector Console can be picked up at any voice terminal by dialing the
Park retrieval code ( V 8 ) and the number on which the call is parked.
The rightmost button on the bottom row is a Test button.When it is pressed, all DXS LEDs
will light sequentially; a second press allows individual LEDs to be tested and a third press
ends the test.
Considerations
When there are two Attendant Selector Consoles in the system the Group Select button
assignments are identical.Whenever an administrative change is made to one console, the
other console is automatically changed.
Buttons on the Selector Console point to either station PDCs, FPDCs (FPDCs), Park codes,
DGC access codes, or pooled facilities. Calls extended by the Selector Console are directed
as described in the “Personal Dial Codes” feature description.
When a station calls the attendant, the associated LED on the Selector Console will flash
while the call is ringing and will light steadily when the attendant answers the call. The LED
will light steadily whenever the terminal is off-hook.Station busy indication is not provided
for buttons pointing to FPDCs.
If a call to a PDC is directed to a COVER or LOOP button on the Attendant Console, the
covered status LED of the voice terminal on the Selector Console will flash and then go dark
when the call is answered by the attendant. If the covered call was intended for a FPDC that
was signed in at a terminal with attendant coverage, the Selector Console status LED
associated with the FPDC (if assigned) will flash. In this case, the Cover button status LED
will also flash (DTAC only).
A call can arrive at an Attendant Console SYSTEM ACCESS or LOOP button because the
PDC or FPDC is signed in at the Console or because the FPDC is not signed in anywhere.
For these calls, the status LED on the Selector Console will not light.
If the attendant extends a call to a station or DGC group and that call returns to the
attendant, the status LED of the called station or group on the Selector Console will flash
and then go dark when the call is answered by the attendant. This is true regardless of the
sign-in status of the PDC.
Interactions
The following features interact with Attendant Direct Extension Selection.
Attendant Position Busy:The Selector Console functions normally when the associated
Attendant Console is in the inactive mode.
Attendant Return-Coverage-On-Busy/On-Don’t-Answer:If a call to a FPDC is returned to the
attendant on a RTN-BUSY or RTN-DA button or on a LOOP button, the status LED of the
FPDC on the Selector Console will flash during ringing and go dark when answered.
2-36 
						

							Attendant Direct Extension Selection
Callback Queuing: Callbacks to the attendant do not flash at the associated Selector
Console.
Coverage: If the attendant receives a coverage call for a FPDC, the associated status LED
on the Selector Console will flash and then go dark when the call is answered by the
attendant.
Direct Group Calling: When all stations in a DGC group are busy, the DXS status LED on
the Selector Console lights.
Pooled Facilities: If a 1- or 2-digit FAC is used, the associated status LED on the Selector
Console will light steadily whenever all trunks in this group are busy. This does not occur
with 3- or 4-digit FACs.
Administration Requirements
Special Feature Ports:
l Assign a port on a ZTN79 ATL Station Circuit Pack for each Selector Console.
l Assign Group Select button hundreds groups.
System:
l Assign Selector Console Park codes.
l Park return time (0-240 seconds; default = 120).
Hardware Requirements
Requires an Attendant Selector Console, and a port interface on a ZTN79 ATL Station CP.
The Selector Console requires a KS-22911, List 1 Power Supply, associated 115V ac power
outlet, and a 400B-type Adapter. The 400B2 Adapter provides power to the console at the
wall jack. The Console connects to a port on the ZTN79 ATL Station CP.
Detailed connection information is provided in Figure 2-7. Descriptions of the Station
Interconnect Panel (SIP), Trunk Access Equipment (TAE), and associated cables and
adapters, as shown on the figures, are provided under “Connectivity” in Section 4.
2-37 
						

							FEATURES AND SERVICES
SYSTEM 25
CABINET
ZTN79
HYBRID
LINE CPPART OF
OCTOPUS CABLE
PART OF SIP
C2SIPW1B1ATTENDANTC1
ADAPT.SELECTOR
B2CONSOLE
T1
C7
400B2ADAPT.
LEGEND:
B1 -B2 -C1 -C2 -
C7 -
P1 -T1 -W1 -
*-
RANGE:
TYPICAL-103A CONNECTING BLOCK*400B2 ADAPTER -FURNISHED WITH CONSOLE
MODULAR CORD (D8W-87) - FURNISHED WITH
OCTOPUS CABLE (WP90780) - PEC 2720-05P
CORD D6AP-87- FURNISHED WITH CONSOLE
KS-22911 POWER SUPPLY - FURNISHED WITH
23A1 SELECTOR CONSOLE - PEC 62509
4-PAIR INSIDE WIRING CABLE*
FURNISHED BY INSTALLER
WITHIN 2000 FEET OF SYSTEM CABINET
(LOCAL POWER REQUIRED >1000 FEET)-48VDC
P1
CONSOLE
CONSOLE
Figure 2-7.Attendant Direct Extension Selector Console Connections
2-38 
						

							Attendant Forced Release (SLAC Only)
Attendant Forced Release (SLAC Only)
Description
This feature drops all active parties from a call in which the attendant and one or more other
parties are connected together.The attendant uses the feature by pressing the FORCED
RELEASE button while connected to other callers in a conference-type call. The other parties
will be disconnected from the console and from each other. After Forced Release has taken
place, the attendant can receive a new call from the console queue or place a call.
Considerations
Forced Release differs from Release in an important respect. Simple Release separates the
attendant from an extended call or a conference call, but leaves the other parties connected
together; Forced Release completely disconnects all parties.
When the attendant is connected to only one other party, Forced Release has the same
result as Release (that is, the call is ended). If the attendant has already Released, Forced
Release has no additional effect.
For information on related Attendant Features (Table 2-E), refer to the individual feature
descriptions.
2-39