The principle behind the feature invocation for ACWin and ACWinMQ Upoe is the same as that for AC.

The returned paged call to be joined arrives at the P sub-unit of the Attendant. An indication associated with the P sub-unit is shown. The Attendant can join a call received at the P sub-unit to a held call at either the T, O or R sub-units, or a parked call.

The new JOIN key will reside in the AC-Win Buttons window.

The incoming call (returned paged call) will appear in the AC-Win Call Control window.

When the attendant accepts the incoming call, it will be shown as CONNECTED in the AC-WIN Call Control window. The call to be JOINed can be held at either theT, O or R sub-units, or parked.

For held calls, the attendant clicks the JOIN key in the AC-Win Buttons window, or uses the keyboard, and then selects the sub-unit key (where the calling party is held) in the AC-Win Call Control window, both calls are now connected and released from the attendant.

For parked calls, the attendant clicks the JOIN key in the AC-Win Buttons window and then either double clicks to the call in the PARK window, or single clicks to the park position and then presses RECONNECT on the keyboard, the 2 parties are now connected and released from the attendant.