ATT System 25 Reference Manual

Third-Party Call Setup
Considerations
With this feature, computer-based telemarketing or other calling applications can set up calls
for the user.
Interactions
The following features interact with Third-Party Call Setup.
Account Code Entry, Forced (FACE): If the source station is FACE-restricted, the third-party
data terminal must prefix the outside destination number with V 0 and an account code.
Coverage: Third-Party Call Setup calls to the source terminal will not be directed to a
coverage station.If...

FEATURES AND SERVICES
—
No source terminals (feature disabled; default)
l AT&T STARLAN NETWORK Access:
Ports administered on the STARLAN INTERFACE circuit pack may not have a
particular source terminal associated with them.Depending on the administration
parameters enabled, third-party data terminals on the STARLAN INTERFACE circuit
pack may establish calls for:
—
Any voice or data source terminal
—
No source terminals (feature disabled; default).
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Tie Trunks
Tie Trunks
Description
Tie trunks provide
Incoming tie trunk
endpoint. Serviceprivate
communicationslinks between System 25 and other PBXS
calls may be directed to the attendant, to a voice terminal, or to a data
may be either automatic, immediate dial, delay dial, or wink start. Dial
pulse or touch-tone signaling is supported on both incoming and outgoing calls (and may be
different for incoming and outgoing calls).
Considerations
Tie Trunks provide for efficient communications
locations....

FEATURES AND SERVICES
Administration Requirements
Trunk Port:
l
l
l
l
l
l
l
lAssign Trunk Type And Number.
Assign Class Of Service Code (0-15).
Assign Facility Access Code; default = 102.
Allow Dial Access (yes or no; default = yes).
For Auto-in Type Only—Assign To DGC Group (Group Number 1-32, or 0 for none;
default = 0).
Make This a Directed Night Service Trunk (yes or no; default = yes).
Assign Night Service Delay Announcement (1, 2, or 0 for none; default = 0).
Dial-Inward Capability (Tone or Pulse;...

Tie Trunks
Hardware Requirements
Requires port interfaces on a TN760B Tie Trunk CP or TN767 DS1 Interface CP.
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FEATURES AND SERVICES
Touch-Tone and Dial Pulse Services
Description
All touch-tone single-line voice terminals and MET sets are equipped with dial pads that
generate Dual Tone Multifrequency (DTMF) signals when a dial button is pressed. Model
500 Series single-line terminals have rotary dials that generate dial pulses corresponding to
the numbers selected. The 7300H series (MERLIN) voice terminals are equipped with touch
dial pads that generate digitally coded signals when a dial button is pressed.
Each...

Transfer
Transfer
Description
This feature allows a user to move any call from the user’s terminal to another voice
terminal, then disconnect from the call.
A user can transfer calls either with or without announcement. A multiline terminal user
presses TRANSFER; the party is automatically placed on Special Hold (indicated by a
broken-flutter on the status LED of the call appearance button). The system will
automatically select an idle System Access button. The user may dial the desired number or
select...

FEATURES AND SERVICES
Bridging of System Access Buttons:A call can be transferred from a bridged call
appearance using the usual transfer operations.When a call is held for transfer by pressing
the TRANSFER button, an idle System Access button or an idle System Access-Originate
Only button, if available, is automatically selected by the system for placing the new call. If
neither of these appearance types is idle, the user can manually select a BA button or any
other call button on which to place the new...

Transfer
Music-On-Hold: An administration item allows Music-On-Hold to be enabled or disabled for
“Special Hold.”
Park: Single line voice terminals cannot transfer parked calls.
Pickup: A transferred call maybe answered via the Pickup feature.
Public Station: If a non-restricted user (typically the attendant) transfers dial tone to a PUBLIC
station, the restriction level (level 5) of the PUBLIC phone will apply, unless higher restriction level
stations remain on the call with the PUBLIC station. If a...

Features and Services
Transfer To Data
Description
This feature allows multiline voice terminal users to originate or answer a call from their voice
terminals and then establish a data connection by transferring the call to a data terminal.
Note: Single-line voice terminals cannot be used to establish a data connection by trans-
ferring a call to a data endpoint.
(Refer also to the overview of the system’s data features provided in the “Data Services Overview”
description.)
Data terminal calls can be set...