ATT System 25 Reference Manual

							Last Number Dialed
Last Number Dialed
Description
Last Number Dialed automatically saves the last number dialed from a multiline voice
terminal or ATL cordless telephone and allows the user to place the call again without
manually redialing the number. The feature is administered to a button on the terminal. Both
inside and outside calls can be made in this way.The original call can be placed by manual
dialing, by operation of a programmed button, or by Speed Dialing.
To use the feature, the caller first gets dial tone, and then presses the Last Number Dialed
button (LAST # DIALED). The I-use and status LEDs of the button selected for originating
the call (for example, System Access, Loop, or Personal Line) light steadily; if the Last
Number Dialed button has an LED, it lights momentarily. The call proceeds in the normal
way. The number associated with the Last Number Dialed button remains saved even if the
called party answers.Only the dialing of a new number changes the state of the Last
Number Dialed button; the old number is then erased and the new one stored.
Considerations
Last Number Dialed is a convenience feature that is especially valuable for redialing multi-
digit numbers that were first dialed manually from a terminal’s pushbutton dial. However, the
feature can also be used to redial numbers originally called by the following means:
l Repertory Dial buttons.
l Group Select and DXS buttons on a Selector Console.
This feature saves numbers with up to 16 digits.
The user must hear dial tone before pressing the Last Number Dialed button.
The Last Number Dialed feature cannot be activated by dialing an access code. It is not
available to users of single-line voice terminals.
If a dialed number does not complete a call, Last Number Dialed still stores the digits dialed.
If the user presses the Last Number Dialed button, then dials additional digits to complete
the call, both the currently stored digits and the dialed digits will be stored.
Interactions
The following features interact with Last Number Dialed.
Account Code Entry, Forced or Optional:Last Number Dialed does not save the access
code V 0 or the account code.
Attendant Display: When a call is placed at a Switched Loop Attendant Console, using the
Last Number Dialed button, the call information display has the normal format of an outgoing
call. In the Inspect mode, pressing the Last Number Dialed button displays the number
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							FEATURES AND SERVICES
currently stored on the button.
Automatic Intercom: Numbers called using an Automatic Intercom button are not saved by
the Last Number Dialed feature. The number currently stored by Last Number Dialed is not
changed by operations of the Automatic Intercom button.
Bridging of System Access Buttons:The Last Number Dialed feature saves numbers called
from either Bridged Access buttons or System Access buttons.
Call Accountability: When a station user dials ##PDC to provide accountability for a call
and then dials the desired digits the ##PDC is not saved by the Last Number Dialed
feature.
Conference: When a station user adds a party to a conference, the number dialed is saved
as the Last Number Dialed.
Direct Station Selection (DSS): Numbers called using a DSS or Flex DSS button are not
saved by the Last Number Dialed feature. The number currently stored by Last Number
Dialed is not changed by operations of these buttons.
Personal Lines: When a user originates a call from a Personal Line, only the digits dialed
after the line is accessed are saved by the Last Number Dialed feature. The same type of
line must be selected to get dial tone for placing another call using Last Number Dialed. If a
different type of line is used, the call may be directed to the wrong destination.
Pooled Facility—Direct Access:When a user originates a call from a Direct Facility Access
button. only the digits dialed after the line is accessed are saved by the Last Number Dialed
feature. The same type of button should be selected to get dial tone for placing another call
using Last Number Dialed.If a different type of button is used, the call may not be
completed properly.
Repertory Dialing: When using a Repertory Dialing button to place a call, the numbers dialed
are saved by Last Number Dialed. When the call is redialed using Last Number Dialed, the
same type of button where dial tone was originally accessed should be used again to ensure
that the call is directed to the correct destination.
Speed Dialing: When using a Personal or System Speed Dialing code to place a call, the
code is saved by Last Number Dialed. When the call is redialed using Last Number Dialed,
the same type of button where dial tone was originally accessed should be used again to
ensure that the call is completed properly.
System Access/System Access Originate Only Buttons:If a user originates a call from one
of these buttons, the same type of button should be selected for getting dial tone to place a
second call with the Last Number Dialed feature. Using another type of button, such as
Personal Line or Direct Facility Access, to get dial tone may prevent the call from completing
properly.
Transfer: When a station user Transfers a call, the dialed number (of the party to whom the
call is transferred) is saved as the Last Number Dialed.
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							Last Number Dialed
Administration Requirements
Last Number Dialed is a default feature on all multiline voice terminals. One button is
assigned to the feature at each set.The feature can be moved or removed by
administration.
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							FEATURES AND SERVICES
Leave Word Calling
Description
Leave Word Calling (LWC) is available only when a Voice Message System (VMS) is
connected to the System 25; the VMS provides the message processing and voice
synthesizing facilities used by LWC.The interface between System 25 and VMS requires
administration of special ports on analog tip/ring circuit packs.
LWC enhances the messaging capabilities of System 25 by enabling users to generate “call
me” voice messages for PDCs and FPDCs.The messages have a format such as “Call
(name) on extension (number)” and are assembled, stored, and delivered by VMS. Called
parties are alerted to their messages by lighted Message LEDs, when available.
At a multiline voice terminal, LWC can be used when the terminal is off-hook under any of
the following condltions:
l Receiving busy tone
l Receiving ringback tone
l Queued on the called station
l Connected to a coverage point for the called station
LWC is then activated by pressing the LEAVE WORD button, which sends a request to VMS
to leave a message for the called endpoint (station or FPDC).
An LWC message can also be sent when the multiline terminal is not active on a call. In this
case, the user goes off-hook to get dial tone, presses LEAVE WORD, and dials the desired
extension number.
The single-line voice terminal user who wishes to leave a message at another station must
first go from the on-hook state to the off-hook state to get dial tone. Then the user dials
LWC code #92 followed by the desired extension number.
In all these procedures, confirmation tone is returned to the caller to indicate acceptance of
the dialed code. Reorder tone indicates that the process cannot be completed. After leaving
a message, the caller can hang up or handle other calls.
System 25 attempts to deliver LWC requests to VMS as they are generated. Requests are
queued if the VMS ports are busy.Up to 20 requests can be queued at one time and be
waiting for a voice messaging port to become available.While an LWC request is in queue,
the Message LED at the called station will not light and the message cannot be retrieved.
A PDC is administered for users to call to retrieve their messages from the VMS. This PDC
is the same one assigned to voice messaging ports and used by the system to interface with
peripheral messaging equipment.To retrieve a message indicated by a lighted Message
LED, the user dials the message station PDC. All stored messages are presented to the
user by voice synthesis.The user can use touch-tone signals to have messages repeated
and to erase messages.Password protection is provided.
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							Leave Word Calling (LWC)
Considerations
System 25’s Leave Word Calling feature provides an easy method to send “call me”
messages by way of an attached VMS. When the feature is activated, caller and called party
information is delivered to the VMS, which lights the Message LED of the called party and
then prepares a brief message containing the caller’s name and extension. The called party
can retrieve the message at his/her convenience.
Multiline voice terminals cannot use dial code #92 to activate LWC.
The VMS system itself must be administered to register the PDCs and FPDCs of all calling
and called stations.
Interactions
The following features interact with Leave Word Calling.
Callback Queuing: A user who is queued for access to a busy station
callback request is canceled when LWC is activated.
Coverage: A multiline voice terminal user can activate LWC for the
FPDC) even if the call has gone to coverage.
Display: If a user successfully activates LWC, the display shows
number and MSG SENT.can invoke LWC. The
called party (PDC or
the called extension
Screen 1879 MSG SENT
If an LWC attempt is not successful, the display shows the called
DENIED.
extension and MSG
Screen 1879 MSG DENIED
Voice Message System:LWC can be used only in conjunction with a VOICE POWER Voice
Message System.
Administration Requirements
Multiline Voice Terminal Port:
l Assign a LEAVE WORD feature button.
System:
l Establish interface with associated Voice Message System.
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							FEATURES AND SERVICES
Hardware Requirements
A Voice Message System must be connected to the System 25 by way of a port on a ZTN78
Tip Ring Line circuit pack.Use of a TN742 Analog Line circuit pack for VMS interface is not
recommended.
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							Line Selection
Line Selection
Description
Multiline voice terminals may have many line (facility) appearances. There are three methods
by which a user may select a desired line: (1) Prime Line Preference, (2) Ringing Line
Preference, and (3) Preselection.
Prime Line Preference:
Automatically connects a multiline voice terminal to a specified line or facility designated as
preferred when the terminal goes off-hook. This feature may be assigned to System Access,
Loop, Bridged Access, Automatic Intercom, DSS, Personal Line, and Direct Facility Access
buttons.
On the Switched Loop Attendant Console. the topmost Loop button has Prime Line
Preference by default.However. the feature can be assigned to any of the five Loop
buttons.
The user may override this feature by preselecting another button (see below).
If Prime Line Preference is assigned to an Automatic Intercom (AUTO ICOM) or DSS button,
the called voice terminal will ring as soon as the terminal goes off hook.
When the Prime Line Preference feature is assigned to an AUTO ICOM, DSS, or Direct
Facility Access (FACILITY) button, the button must be pressed to activate the busy-to-idle
reminder even though the button’s I-use LED is lighted steadily.
If Prime Line Preference is assigned to a Personal Line or Bridged Access button, the user is
connected to the button upon going off-hook, even if the line is busy. The user is always
connected to the button where Prime Line Preference is assigned, unless the line has a call
on hold.
Ringing Line Preference:
Automatically connects a multiline voice terminal to an incoming call ringing at the terminal.
Ringing Line Preference overrides Prime Line Preference and Preselection when a call is
ringing at an on-hook voice terminal.
Line access buttons that can be selected by Ringing Line Preference include System Access,
Bridged Access, Automatic Intercom, Coverage, and Personal Lines.
If two or more lines on a multiline terminal or a Direct Trunk Attendant Console are ringing
simultaneously, the user is connected to the first line to start ringing. If the user wishes to
use a different line, the line must be preselected prior to going off-hook. If ringing ceases
while the user is on-hook, line preference reverts to whichever option is applicable (Prime
Line Preference or no preference).
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If a line rings at a multiline terminal when the terminal is busy on another call, Ringing Line
Preference will not activate, even if the user goes on-hook during the ringing cycle.
However, Ringing Line Preference is not canceled at the Attendant Console while the
attendant is off-hook. If a line is ringing while the attendant is off-hook, the ringing line will
be selected as soon as the attendant goes on-hook.
Preselection:
Allows multiline voice terminal users to override the above line preference features.
Users may simply press a desired line access button before going off-hook. The user will be
connected to the facility selected unless the facility is busy and the party using it has invoked
Exclusion or is part of a conference call that is at maximum capacity.
When off-hook, a user can select a facility by pressing the associated button. (This will
terminate the call the user was on.)
A user may activate the busy-to-idle reminder on a busy AUTO ICOM, DSS, FLEX DSS, or
FACILITY button by pressing the button while on-hook.A burst of ringing is provided when
the facility becomes idle.Refer to the description of the Busy-to-Idle feature for additional
information.
Considerations
Prime Line Preference (on the topmost SYSTEM ACCESS or Loop button) and Ringing Line
Preference are assigned by default to all multiline voice terminals. While these assignments
may be changed, it is strongly recommended that Ringing Line Preference be retained.
It is recommended that Prime Line Preference not be assigned to a Direct Trunk Attendant
Console (DTAC).
Preselection allows users to override line preference features already administered for the
terminal and to activate the busy-to-idle reminder feature.
Interactions
The following features interact with Line Selection.
Attendant Console, Direct Trunk: If a line rings at a DTAC while the attendant is on another
call, Ringing Line Preference will be invoked when the attendant hangs up.
Bridging of System Access Buttons:A Bridged Access button can be specified as the
preferred line for outgoing calls when the station goes off-hook.
If a station has Ringing Line Preference enabled and has a ringing bridged call appearance,
an on-hook user is connected to the bridged appearance if the set goes off-hook.
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							Line Selection
Power Failure/Cold Start:On power-up, most multiline voice terminals will have no I-use
LED lit and will not draw dial tone until a button is pressed. After this, line selection should
work as described above.
Administration Requirements
Voice Terminal Port:
l Prime Line Preference:
Assign Prime Line Preference; default = top SYSTEM ACCESS button or top LOOP
button (Switched Loop Attendant Console only).
l Ringing Line Preference:
Assign Ringing Line Preference (yes or no; default = yes).
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Line Status and I-use Indications
Description
Provides users with a usual indication of the status of feature buttons and lines appearing at
a their multiline terminals.A green status LED and a red I-Use LED are provided for each
programmable button on most multiline voice terminals.
Table 2-K summarizes LED states and associated descriptions for line appearances.
Table 2-K.
LED Indications
I-UseLine StatusMeaning
(Red LED)(Green LED)
OffOffFacility is idle.
On
OnIf off-hook, facility is in use at this terminal. If
on-hook, busy-to-idle reminder is set.
Off
OnFacility is busy or Feature has been activated.
OffWinkingFacility placed on hold.
OnFlashingFacility ringing; call will be answered if user
goes off-hook.
Off
FlashingFacility ringing; call will not be answered if
user goes off-hook.
OnOffFacility that will be accessed upon going off-
hook.
OffBroken FlutterFacility is being transferred or conference.
Considerations
Line Status and I-Use indications provide the user with visible indications of the status of the
lines and features.
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