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 Forwarding treatment.
Last Number Dialed: Numbers called by pressing FLEX DSS or DSS buttons are not saved
by Last Number Dialed and cannot be redialed with that feature.
Line Selection (Prime Line Preference): When Prime Line Preference is assigned to a DSS
button, the button must be pressed to invoke the busy-to-idle reminder, even though its red
I-Use LED is lighted.
Personal Dial Code (PDC): An attempt to program a FPDC on a FLEX DSS button (rather
than a PDC) results in Reorder Tone.
Pooled Facilities: A pooled facility access code may be stored on a FLEX DSS button (but
not on a DSS button). If so, the button will function very much like a Direct Facility Access
button, with the capability of receiving a busy-to-idle reminder for the pooled facility.
However, this button will not allow access to a dial-restricted facility.
Administration Requirements
Voice Terminal Port:
l Assign DSS and/or FLEX DSS buttons.
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							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 (DGC) groups, and trunks.
Call information is presented on the 16-character screen located in the upper right area of
the following sets. (Refer to Section 4, “Hardware Description” for complete information and
pictures.)
l Model 7305H04C 34-Button Multiline Voice Terminal.
l Model 7317H01A 34-Button Multiline Voice Terminal (BIS 34D).
Both of these terminals can be assigned as general user positions or as Switched Loop
Attendant Consoles (SLACs). Display operation is basically the same in both applications;
differences will be pointed out in the following descriptions.
The following types of data are presented for calls handled at display terminals:
l The extension number and name of an inside party called from the console
l The extension number and name of an inside party calling the console
l Trunk identification on incoming trunk calls
l Digits dialed on outgoing trunk calls
l Called and calling party information on coverage/redirected calls
l Called and calling party information on returning and third-party calls.
l Call type and reason for return or redirection
l Number of calls waiting in attendant, callback, and DGC queues
l Special information resulting from feature button operation
Display Screen
The Display feature can generate up to two screens of call information, each of which
contains 16 character positions.Screen 1 is automatically activated on incoming and
outgoing calls and some feature button operations;no action is required of the station user
to access this display. Screen 2 is available for secondary and overflow information about
calls.
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							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 call handling activity.
The Display feature has four other modes of operation that the user must enter to operate
the Directory, Inspect, Local Display, or Program features:
l Directory Mode:for searching for names/numbers in the system’s integrated
directory; entered by pressing DIRECTORY.
l Inspection Mode:for displaying information about call appearances, assigned
features, stored numbers, etc; entered by pressing INSPECT.
l Local Mode: for accessing the built-in clock and timer functions of the display unit;
entered by pressing LOCAL at some terminals; default mode at some idle terminals.
l Program Mode: for supporting the Program feature and storing Repertory Dialing,
Flex DSS, and Personal Speed Dialing numbers; entered by moving the PROGRAM
switch to its “P” position (except on SLACs) or by dialing access code #4 (at any
display set).
General Rules for Normal Mode
l The display tracks, character by character, whatever a user enters from the dial pad
buttons.Entries that exceed the capacity of Screen 1 automatically overflow to
Screen 2; when this occurs, a continuation symbol “-” appears in position 1 of
Screen 2.
— If dialed characters form a valid Personal Dial Code (PDC), Data Dial Code
(DDC), or Direct Group Calling (DGC) access code, the Display ID from the
system’s integrated directory is shown.
— If dialed characters form a valid feature access code requiring additional input
(such as for Account Code Entry), a feature prompt is displayed: the
additional input is tracked character by character.
— If dialed characters form a valid Personal Speed Dialing code, the number
stored under the code is displayed; if no number is stored. NO
INFORMATION is displayed.
l The user can alternate between Screen 1 and Screen 2 by pressing the SCROLL
button. Pressing SCROLL has no effect if Screen 2 is empty.
l Any information stored by the terminal user (Repertory Dialing numbers, Personal
Speed Dialing numbers,etc.) will be displayed when the feature is used. Any
information stored by the System Administrator [Automatic Route Selection (ARS)
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							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
initiated the call and usually the person on the line when the display station
user answers the call).
Generally, if the System 25 acts on a call without the display terminal user having
caused the action, the result is not displayed.For example, if a call is forwarded,
there is no indication of forwarding on the caller’s display; this also applies to calls
that are picked up, sent to coverage, parked, unparked, etc.
— Exceptions: Conference/bridging indication of the number of parties on a call;
exclusion indication when excluded from a call.
Generally, if the System 25 redirects a call away from a display terminal, the display
does not present this information.For example, when a call is picked up by another
terminal, the called terminal does not display this action.
— Exceptions: If a call to a terminal goes to coverage, that terminal’s display
has a “c” in position 16 of Screen 1;if a call is forwarded to an outside
number, the display flashes “F” and the forwarded-to number.
A call-information display will remain on the screen unless one of the following
actions occur:
— The display terminal user presses another call appearance button.
— The user presses another button that causes a system action and/or has
display support.
— The call disconnects.
— The user leaves Normal Mode.
— The user changes switchhook status (from off-hook to on-hook, or vice
versa).
— A call arrives while Automatic Incoming Call Identification is active.
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							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 1F
Call is forwarding from this terminal
to an outside location (Screen 2 blank)
I
Busy-to-Idle Reminder (Screen 2 Blank)
QQueued call (Screen 2 blank, unless
more than 13 digits)
TTransfer of a call to this terminal
is in progress (Screen 2 blank)
Screen 1/
^n
Conference or bridging in progress with n
Positions 15 and 16active parties (non-SLAC stations only)
(If position 15 is
blank, check for one
of the descriptors
in next block.)
cCall has gone from this terminal to coverage
(displayed only while the call appearance
remains on set)
Screen 1/Position 160-9, or !
Number of calls in DGC queue (displayed
for 10 or more
only to logged-in DGC members)
1-9, or !
Number of calls in SLAC queue (displayed
for 10 or moreonly to SLAC attendants)
Screen 2/Position 1–Continuation of digit string from Screen 1
aThird-party call setup
bCovered or called party is busy
dCovered or called party does not answer
Screen 2/Position 16f
Following/forwarded calls
g
DGC callnNight service call
pPicked-up call or returning parked call
sCovered party activated Send All Calls
uCall not-signed-in FPDC (SLAC only)
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							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 reserved on all displays.
Screen 1307 Martin,H
l Origination of Outside Calls
When a display set user places a call to an outside station, the dialed digits appear in
positions 1-14 on Screen 1.If the outside number has more than 14 digits, the
continuation descriptor “-”followed by the excess digits appear on Screen 2:
Screen 191212555604512
Screen 2-345678
The displays generated for calls placed from System Access, Personal Line, and
Pooled Facility buttons do not identify the type button used. The trunk name is not
displayed.
l Reception of Outside Calls
When a display set user receives an outside (trunk) call, the administered Display ID
for the trunk appears.For Direct Inward Dialing (DID) and dial-in tie trunks only, the
extension number of the called station also appears.
Example of DID or dial-in tie trunk call:
Screen 1208 OUTSIDE
Example of other trunk call:
Screen 1BRANCH
l Reception of Coverage or Redirected Calls
When a display set user receives a call that was originally destined for another
station, the redirection descriptor “>”appears in position 1 followed by the covered
(or originally called) party number and name.Screen 2 contains the calling party
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							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}   PARK RTN
Screen 2512 Smith,B p
Example of Third-Party Call Setup call at source station:
Screen 1}912155551212
Screen 2153 Dataterm a
Special Call Displays
Display enhancements provided by R3 apply to the following System 25 features.
l Account Code Entry
When a user activates the Account Code Entry feature by dialing V 0 or pressing
ACCT ENTRY, the system displays the prompt ACCT?.
As the user enters the account code, the digits are displayed to the right of the
prompt. If the number of digits exceeds 9, the system automatically scrolls to Screen
2; the continuation character “-”and the remaining digits appear on Screen 2.
The prompt and digits remain displayed until one of the following occurs:
— The user enters either “#” or the administered number of code digits.
— The user restarts the Account Code Entry feature by dialing V 0 or pressing
ACCT ENTRY again, to correct an erroneous entry.
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							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 call. When callback queuing goes into effect for the call, the
display updates to CALL QUEUED.If the user cancels queuing, the display is
QUEUE CANCELED. If the queuing attempt is denied, QUEUE DENlED appears.
When a station receives callback, indicating that the called facility is now available.
the display shows the same information seen before queuing, except that queue
descriptor “Q” appears in position 1, displacing the number and name fields to the
right. Once the user answers the callback, “Q” is removed.
l Calls to the Attendant
The default name associated with PDC “0” is ATTENDANT. A different name can be
assigned, if desired.
l Conference/Bridging
Call descriptor “ 
^ ”
appears in position 15 of Screen 1 of non-SLAC positions for
calls containing more than two active parties; position 16 contains the actual number
of conferees or bridgers.The number of conferees is displayed at each terminal in a
conference or bridged call and is updated as the status changes.
Screen 1324 Tango,S^4
The “ 
^ ” and the number of conferees overwrite whatever was in positions 15 and
16 of the current display.
l DGC Queue Field
A logged-in Direct Group Calling (DGC) group member can view the number of calls
waiting to be serviced by the group.The display is continuously updated for all
members. A digit, 0 through 9 or“!” for 10 or more, appears in position 16. DGC
queue values are not displayed at a SLAC assigned to a DGC group; the attendant’s
display always contains the number of calls waiting in the attendant queue.
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							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 1, followed by the digits of the outside number.
Screen 1F912325552365
Leave Word Calling (LWC)
If a user successfully activates LWC, the display shows the called extension number
and MSG SENT.
Screen 1879 MSG SENT
If an LWC attempt is not successful, the display shows the called extension and MSG
DENIED.
Screen 1879 MSG DENIED
Manual Signaling
A display set receiving manual signaling from another station has SIG in positions 1-
3. The name of the signaling party, if available, or the extension number of the
station from which the signal was sent appears in positions 6-14.
Screen 1SIG Borden,L
The message is displayed for 5 seconds or until the
receives a call. The signaling party has no display foruser selects another button or
this feature.
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							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
station reverts to a
party is displayed.completed, “T” is removed and the display at the transferred-to
standard incoming call format; information about the transferred
Note:If the transferring station does not have a
party is on an outside trunk, the name of
dialed digits, is displayed.
Automatic Incoming Call Identificationdisplay and the transferred
the trunk, not the originally
This subfeature allows a display set user to automatically receive the identification display for
a new incoming call while busy on another call.Any existing display is temporarily removed,
and the new information is flashed on Screen 1. The display presented by this feature has
the same format as the display for an incoming call at an idle station.
The automatic display flashes only once for a given incoming call and appears when the call
first rings. If the System Access or Bridged Access button has delayed ringing, the display is
delayed also; if the appearance button is administered not to ring, automatic display is
suppressed.The automatic display is replaced by another simultaneously incoming call
display or by reinstatement of the original active display. If the user wishes to examine the
call information again, the Inspection Mode must be entered. When administered for a
station, Automatic Incoming Call Identification operates only in Normal Mode, but does not
operate while the user is off-hook and dialing digits.Automatic Incoming Call Identification
does not revolve use of the Inspection Mode.It is administrable on an individual display set
basis but is not supported on the SLAC.
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