Use the Conference feature, with the associated conf button, to create a conference without the assistance of an attendant.

A user with a multiple appearance telephone with a conf button can create a conference with as many as six participants.

A user with a single-line telephone can create a conference with as many as three participants.

Each of these three participants can then add another participant. Thus, a user who has a single-line telephone can create a conference call with as many as six participants.

A Conference key configured for UNIStim and 39XX endpoints at a fixed position and 2XXX digital endpoints at a programmable 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 can establish a 3-way or 6-way conference. There is no such limitation for a Communication Manager station, all conference buttons are treated as six party conference.

Certain endpoints display Conference and a number, for example, CONFERENCE 3. 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.

Conferences are made by using a hook flash and subsequent operations.

CS 1000 analog station requires the transfer class-of-service to be permitted in order to do any conferencing because there is no button to program with the transfer or conference function. The absence of the button does not indicate that transfer or conference is denied.

On CS 1000, the transfer service automatically allows three-party conference. To do a transfer, three-party conference must be allowed. On the other hand, for CS 1000, it is necessary to add a class-of-service to permit a six-party conference.

The Transfer function is available only during an active call. The call may be an existing conference, when six-party conferencing is allowed.

When the user does a switch hook flash, the active call, including conferences that are below the maximum size for an ad hoc conference, is put on hold. The user receives a new dial tone and can dial the transfer target number.

After the far-end is reached, the user can either complete the transfer (blind) or wait until the far-end answers the call, and then complete the transfer (consultative). The transfer completion is done by hanging up.

If the user wants to create a conference instead, the user does a switch hook flash after the destination has answered. All parties are now in the call.

Transfer can be cancelled by doing the switch hook flash while the call is ringing.