NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
Page 68
NDA-24297, Issue 1
A-121 Add On Conference - 8 Party
A-121 Add On Conference - 8 Party
General Description
This service allows the 8-party conference to be established any time by any conferee by use of the 8-party
conference trunk.
Operating Procedure
To establish an 8-party conference
1. Station A calls Station B; Station B answers.
2. Station A (or B) switch hook flashes (or press TRANSFER key) and dials Station C’s number; Station C
answers.
3. Station A (or B) who had dialed Station C’s number presses CONF key; the three-party conference is
established.
4. Station A (B, or C) switch hook flashes (or press TRANSFER key) and dials Station D’s number; Station
D answers.
5. Station A (B, or C) who had dialed Station D’s number presses CONF key; the four-party conference is
established. In the same way, any user connected to the 8-party conference trunk can establish the 8-party
conference by switch hook flash and pressing of the CONF key.
6. When one of the conferees (the user or the outside party) releases, another member can be added to the
conference by the same operation.
7. Single phone can add other conferee by switch hook flashes and dials telephone number, then switch hook
flashes again.
8. When one D
term
station and multiple outside parties (trunks) are connected to the 8-party conference trunk,
when the D
term
user presses RETAIN CONF key and goes on-hook, the conference by the outside parties
(trunks) can be continued. In the other cases as when the station is not a D
term
, RETAIN CONF key is not
assigned, or there is only one outside party connected, the conference trunk is released automatically.
When conference has multiple outside parties (trunks), only D
term
s can keep multiple outside parties still
in conference, but it releases by pressing RETAIN CONF key.
Service Conditions
1. The 8-party conference trunk will be treated as a station, and will have an intra-office route number.
2. The 8-party conference circuit card can be assigned to any slot.
3. A minimum of 1 CFTB-L is needed for this feature. A maximum of 20 8-party conference trunk circuit
cards (SPA-CFTB-L) can be installed per system.
4. The 8-party trunk assigned in a different tenant from the general station/trunk, and the connection between
the 8-party trunk and the other station/trunk is to be restricted (inter tenant restriction).
5. This service can coexist in the same system with the Three-Way Calling service using the three-way
conference trunk built in the line group = 21–23 of the odd numbered unit, and the current 8-party
conference service. If a station is assigned SFI 131, that station will use the 8-party conference trunk even
for a 3-party conference.
6. Any one of the station, central office line, tie line, CCIS line, or the ISDN network subscriber can be the
conference member.
7. The Attendant Console cannot be a member of the conference. Pressing the CONF key will be invalid.
8. The stations connected to the 8-party conference trunk can call the conferees separately any time.