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T-28
T-28
Trunk-to-Trunk Third-Party Cancellation
General Description
This feature allows a station to cancel an active trunk-to-trunk connection (during a three-way-connection) and
return to the original call.
Operating Procedure
If a station is presently engaged in a call with another station or with a trunk party
1.
Switch hook flash; receive special dial tone.
2.
Dial a trunk access code and the number for the desired third party; the called party is rung.
3.
Switch hook flash to establish a three-way connection.
4.
Switch hook flash to release the trunk; the station returns to the original call.
Service Conditions
1.
The third party that can be cancelled by this feature is an outgoing trunk seized by an outgoing access from
CONSULTATION HOLD-ALL CALLS [C-17].
2.
If a Broker's Call has been activated by a D
a.) In the case of CONSULTATION HOLD-ALL CALLS [C-17] outgoing (station hold), the third
party can be cancelled as follows: Engaged in station-to-station call
Switch hook.
b.) The third party cannot be cancelled by the following sequence: Engaged in station-to-trunk call
Three-Way Connection
c.) This restriction does not apply to CONSULTATION HOLD-ALL CALLS [C-17] outgoing (trunk
hold).
Programming
ASYD - System Data 1, Index 156. Trunk Soft Hold Timer A, used with second dial tone trunks.
Assign data 00H for 30 seconds. (Data 31H may be used for a value of two seconds if CALL
TRANSFER-ALL CALLS [C-11] is to be used immediately after connecting to the trunk.) This is the
time between trunk connection and when switch hook flash is allowed on a non-senderized trunk
connection.
System Data 1, Index 157. Trunk Soft Hold Timer A, used with senderized trunks. Assign data 00H for
a value of 18 seconds. (Data 31H may be used for a value of two seconds, if CALL TRANSFER-ALL
CALLS [C-11] is to be used immediately after connecting to the trunk.). This is the time between trunk
connection and when switch hook flash is allowed on a senderized trunk connection. It is also used to
determine when SMDR billing will begin.
System Data 2, Index 1, Bits 0 & 1. CONSULTATION HOLD allowed or denied? 00: Denied; 01:
Originating and Terminating Calls allowed, Tandem Call denied; 11: All calls allowed. Normally
assign data "11".
System Data 3, Index 2, Bits 0-3. Switch hook flash starts timer. To calculate this value: (1 ~ FH) x
120 msec = Timer.
Page 770
Trunk-to-Trunk Third-Party Cancellation
term
Switch hook.
, the following restrictions apply:
NEAX2400 IPX Feature Programming Manual
Three-Way Connection
NDA-24297, Issue 1
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