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T-10
General Description
This feature provides any station user with the ability to conference together either two Central Office calls
or a Central Office and TIE Line call.
Operating Procedure
To operate:
1.
Place incoming caller on hold.
2.
Receive Special Dial Tone.
3.
Dial the desired Central Office or TIE access code.
4.
Receive second Dial Tone.
5.
Dial the desired number; receive answer.
6.
Announce the conference and momentarily press the switchhook again.
7.
The original party is now included in connection.
Service Conditions
1.
The originating party may hang up at any time. The additional two parties will not be
disconnected.
2.
This feature may be restricted to individual stations via System Data.
3.
In the case of outgoing calls on trunks with no answer supervision, this feature may be activated
only after 18 seconds have elapsed since the last digit was dialed. This timer is programmable
in System Data.
4.
In the case of outgoing calls on trunks with answer supervision, this feature may be activated as
soon as the called party answers.
5.
A station user may hang up after completing a TRUNK-TO-TRUNK CONNECTION without
affecting the connection of the two outside parties, provided that:
a.) One trunk is incoming and the other is outgoing.
b.) Both trunks are ground start.
c.) Station users wait a programmed time interval after dialing an outside line before
hanging up.
6.
If the originating party encounters a no-answer or busy signal when trying to conference a third
party, the originating party switchhook flashes and is reconnected to the held call.
7.
This feature is inoperative when release signal is not provided from the distant end.
Interactions
1.
For direct trunk-to-trunk connection, see TANDEM SWITCHING OF TIE TRUNKS-2/4-WIRE
[T-1].
2.
If a THREE-WAY CALLING [T-2] connection includes two trunks, then when the station hangs
up, the trunk will release, unless the trunks are allowed TRUNK-TO-TRUNK CONNECTION via
the ARRC command, ARI-D-RES.
NEAX2400 ICS Business Features and Specifications
NDA-24143, Issue 4
Trunk-to-Trunk Connection
Trunk-to-Trunk Connection
T-10
Page 519
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