Digital and UNIStim stations
A Conference key configured for UNIStim and 39XX endpoints at a fixed position and digital 200X endpoints at an unfixed position. Communication Manager considers it as a restricted call appearance that cannot receive any incoming call but can only be used for outgoing calls placed in the process of establishing a conference. Device Adapter will treat this button as a CS 1000 Conference key with existing localization.
The CS 1000 TN can be provisioned with either CLS A03 or A06. This means the user is allowed to establish a three-way or six-way conference. There is no such limitation for a Communication Manager station. On Communication Manager, all stations have a six-party conference capability.
The number displayed with the CONFERENCE label on the phone is the number of conference participants other than the current user. For example, if a user was participating in a conference with 2 other participants, the CONFERENCE label would display CONFERENCE 2.
Analog stations
The analog stations support call transfer on Device Adapter. However, even on CS 1000, the operation was tied to conference.
CS 1000 permitted a user with an analog station having the transfer capability to:
When the transfer/conference capability is enabled, Device Adapter always allows six-party conferences on a station that is migrated from CS 1000. The transfer is always available if conference is allowed.
To create a conference, the analog station user must be on an active call or have a conference already created with less than six participants.
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The user does a switch hook flash and receives a dial tone.
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The user dials the number of the additional party that is needed in the conference.
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If the user hangs up while the call target is ringing, Device Adapter does a blind transfer. This can transfer an existing conference to the target.
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If the user hangs up after the call to the call target is answered, the transfer is completed as a consultative transfer. This can transfer an existing conference to the target.
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If the user does a switch hook flash while ringing, the conference attempt is cancelled.
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If the user does a switch hook flash after the target has answered, the target party is added to the conference.
This matches the CS 1000 analog station user experience for conference.