ATT System 25 Reference Manual

Direct Station Selection (DSS)
Coverage: DSS calls placed to an individual with Coverage will receive standard coverage
treatment.
Display: Operation of a programmed FLEX DSS button generates a display of the information
stored on the button: if the button is not programmed, NO INFORMATION is displayed.
Direct Group Calling: A DSS button can be assigned to a DGC group. The associated LED
lights steadily when all stations in the group are busy.
Following/Forwarding: DSS calls do receive Following or...

FEATURES AND SERVICES
Display
Description
This feature provides visual alphanumeric call information at multiline voice terminals
equipped with display modules.The Display feature also provides support for the Directory,
Inspection, Local Display, and Program features, which are all covered in separate feature
descriptions.Display capability is based on the system’s integrated directory, which allows
names to be associated with Personal Dial Codes (PDCs), Data Dial Codes (DDCs), Direct
Group Calling...

Display
Display Operation Modes
Most normal call handling activity, such as placing and answering calls and using features,
takes place in“Normal Mode.”
Call displays in this mode require no manual action by the
user except for operation of the SCROLL button to display Screen 2 in certain types of calls.
Some terminals (SLACs and logged-in DGC stations) remain in Normal Mode unless their
users deliberately enter another mode, while others revert to a clock/calendar display (Local
Mode) when there is no...

FEATURES AND SERVICES
l
l
l
l
routing information,System Speed Dialing numbers, etc.]
terminal user.
Displays for redirected/coverage and returning/third-party
formats:is not displayed to the
calls have the following
— Screen 1 contains either information about the called party (usually a station
or DGC group) or a feature descriptor that explains why the call has come to
this station (for example, PARK RTN or NIGHT SERVICE).
— Screen 2 always contains information about the calling party (the person who...

Display
Special Descriptors
The descriptors summarized in Table 2-J appear on displays to provide special information
about calls. These symbols consist of upper-case and lower-case letters and other
typographical characters.Descriptors on Screen 2 must be interpreted with respect to the
contents of Screen 1.
Table 2-J.Special Descriptors
LocationDescriptorMeaning
>
Covered or Redirected Call
(more information on Screen 2)
}
Returning or Third Party Call
(more information on Screen 2)
Screen 1/Position...

FEATURES AND SERVICES
Standard Call Displays
The following basic displays illustrate the arrangement of information on the screen(s) for
some of the most common types of calls.
l Origination or Reception of Inside Calls
When a display telephone set user places or receives an inside call, the other party’s
extension number appears in positions 1-4 and name (if administered) in positions 6-
14. Queue information appears in position 16; this field applies only to SLAC
operations and DGC queues, but is...

Display
number and name; the call type designator appears in position 16 (here, “b”
indicates that the covered party was busy).
Screen 1>344 Carter,L
Screen 2798 Bradshaw b
l Reception of Returning or Third-Party Calls
Screen 1 identifies either where the call is returning from or the destination of the
third-party call. Screen 2 presents identification of either the calling party on the
returning call or the data terminal that set up the third-party call.
Example of returning parked call:
Screen 1}...

FEATURES AND SERVICES
—
The system time-out for Account Code Entry is reached.
—
The user selects another button that overwrites the display.
l Busy-To-Idle Reminder
When a user receives this signal, the display format is the same as when the call was
originally placed, except that idle descriptor “I” appears in position 1. Number and
name fields are displaced to the right.
l Callback Queuing
Before this feature is invoked, the display shows the standard format for origination
of an inside or outside...

Display
l
l
l
lFLEX DSS Button Operation
Operation of a FLEX DSS button that is not programmed with an extension number
generates the display NO INFORMATION.
Forwarding
Reception of a forwarded call follows the standard format for a redirected call, with
the call type descriptor “f” in position 16 of Screen 2.
A forwarding display station receives abbreviated alert when a call is forwarded to an
outside number; the display is flashed on Screen 1 only. The new forwarding
descriptor “F” appears in position...

FEATURES AND SERVICES
l Send All Calls
When Send All Calls is
information.If the calls
descriptor “c” appears in
Screen 1
l Transferinvoked, the sending station still
are being sent to coverage, the
position 16.
146 Pearson,M creceives incoming call
proceeding-to-coverage
At a station receiving a transferred call, the transfer descriptor “T” is displayed in
position 1 before the transfer is completed.The transferring party’s number and
name are also shown.
Screen 1T785 Jones,B
After the transfer is...