Conference - Attendant, Conference
Single-line telephones
A bridged call cannot be conferenced if more than one user is active on that call. This is because the bridging user has no access to the call after the primary telephone user places the call on soft hold, and the primary telephone user has no access to the bridging user’s call appearance used for conference/transfer attempts.
You can place a call on hold using normal single-line conference procedures when the primary telephone user is active on a call, and no other bridging user is active on the call. Any attempt by a bridging user to bridge onto the call during a successful conference attempt is denied.
A single bridging user can conference the call using the normal multiappearance telephone conference procedures. Any attempt by the single-line primary telephone user to bridge onto the call during a successful conference attempt is ignored. Any attempt by other bridging users is denied (standard denial response is returned to the bridged appearance).
If a conference is not supported because of the preceding limitations, the user can accomplish a transfer by asking an internal nonbridged party in the connection to create the conference. The user can also ask the remaining bridging users and primary user to disconnect so that the conference can be completed. At completion of the conference, the parties that left the call can reenter the call if control of the conference remains with the primary telephone. If conference control does not remain with the primary telephone, the bridging user must conference the primary telephone and the bridging user back into the call as required.
If the bridging user has no other available bridged appearances of the primary extension (other than the one he or she is currently on), the bridging user, after pressing the conference/transfer button, must select a call appearance to be used for the conference, before dialing the number.
Multiappearance telephones
Conferences can be set up on bridged appearances using the usual conference operations. Either a primary extension button or a bridged appearance button can be used to make the calls for adding to the conference. You can administer the system to automatically select the first idle appearance if there is no idle appearance with an extension matching the extension that is conferencing the call.
Note:
For SIP telephones, you cannot administer the system to automatically select the first idle appearance if there is no idle appearance with an extension matching the extension that is conferencing the call.
When the user presses the conference button (the second time) to connect the parties together, the system displays the newly formed conference call on the primary or bridged appearance to which the user was connected at the time of that last conference button depression. The other appearance is disassociated from the conference call. Therefore, if the original call is on a bridged appearance, and the conference is formed on a primary appearance at that same telephone, the bridged extension becomes disassociated from the conference call. In this case, the primary user can no longer bridge onto the conference.
This disassociation of the conference from the bridged extension can be avoided by setting up the conference in the opposite order. To do this, the user:
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Presses the hold button to hold the original call on the bridged appearance
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Selects a call appearance and calls the party to be added
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Presses the conference or transfer button
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Selects the held bridged appearance
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Presses the conference button (again)
When this procedure is used, the conference is formed on the bridged appearance so that the primary user can still bridge onto the conference call.
If the primary user and the bridged user are both on the call when one user transfers the call, the user performing the transfer becomes the controlling user for the participation of both users on the conference. To disassociate the appearance from the call, the controlling user must be the latter of the two users to disconnect from the call. If the controlling user disconnects first, the appearance goes on soft hold when the noncontrolling party disconnects. In this case, one of two things must occur to disassociate the appearance from the call: all other parties on the call disconnect, or the controlling user rejoins the call and disconnects again.
The display shows the number of other active parties in a call, including active bridged appearances.