NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
Page 738
NDA-24297, Issue 1
T-2D Three-Way Calling - D
term
T-2D Three-Way Calling - D
term
General Description
This feature enables a D
term
user to establish a three-way conference by connecting an additional party to an already
existing conversation.
Even if the additional D
term
user holds the call (Consultation Hold), THREE-WAY CALLING may be established.
Operating Procedure
Procedure 1
1. Press the TRANSFER key; receive special dial tone; the original party is placed on hold.
2. Dial the desired number; receive answer.
3. Announce the conference and press the CONF key.
4. THREE-WAY CALLING is now established. The LCD displays:
Procedure 2 (Hold on Consultation Hold)
1. While connected with the first party, press the TRANSFER key (D
term
); receive special dial tone. The first
party is placed on hold.
2. Dial the second party (D
term
); receive ringback tone.
3. The second party answers; the CONSULTATION HOLD - ALL CALLS state has been entered.
4. The second party presses the HOLD key (D
term
) and the call in progress is held.
5. Press the CONF key and return to the original call.
6. The second party or another D
term
station in the same Multi Line group answers the held call.
7. THREE-WAY CALLING is established.
Service Conditions
1. The originating party may hang up at any time. The other two parties will not be disconnected if assigned
as such in system programming.
2. This feature may be activated during any call that does not include the Attendant Console.
3. Any combination of parties (internal or external) may be included in a three-way call.
4. The maximum number of simultaneous three-way calls is dependent on the quantity of Digital Conference
Trunks within the system. (Conference function is included in the TSW and MUX circuit card.) One
Digital Conference Trunk circuit card can handle eight simultaneous three-way calls.
5. The THREE-WAY CALLING feature is not restricted by the line class of service assigned to the user’s
line; thus, a fully restricted station can transfer a call to another station or the Attendant.
When the Consultation Hold service is used
1. Service restriction class of stations may be assigned at each station.
2. This service is not available when THREE-WAY CALLING has been established.
3. After the originating party presses the CONF key, the station can only go on-hook and press the
TRANSFER key. The party in conversation can only operate on-hook.
4. This service is not available when the transferred call is held by CALL HOLD and so on.
CONF
(Time Display)