NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
NDA-24297, Issue 1
Page 761
Trunk-to-Trunk Connection T-10
T-10 Trunk-to-Trunk Connection
General Description
This feature provides any user with the ability to conference together either two Central Office calls or a Central
Office and TIE Line call.
Operating Procedure
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 switch hook 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 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.) 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 switch hook 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.
Programming
STEP 1: ASYD - System Data 1, Index 156. The timer value for non-senderized trunks between seizure and
when a switch hook flash is possible. Default is 30 seconds.Without SMDR, it is recommended to
change it to two seconds. Program 31H.
System Data 1, Index 157. The timer value for senderized trunks between seizure and when a switch
hook flash is possible. Default is 18 seconds. Without SMDR, it is recommended to change it to two
seconds. Program 31H. (See STATION MESSAGE DETAIL RECORDING
[S-10] ).