Call Waiting notifies a telephone user on an established call, on a Single Call Arrangement DN button (internal or external), that an external call is waiting to be answered. When an external call arrives and the user is on a call, the Call Waiting lamp flashes and a buzz sounds through the speaker.
Call Provisioning:
CLS SWA
Call Waiting (CWT) feature key
User procedure:
Phone is busy on a Single Call Arrangement DN key.
A call is placed to this DN number.
Call Waiting key flashes.
If the user presses the Call Waiting key, the current call is placed on hold and a new call is established with the incoming request. Alternatively, the user can place the current call on hold and press the Call Waiting key. A connection is established to the new call and the user can switch between the two using the Hold method.
Outgoing calls cannot be made using the Call Waiting key.
The Call Waiting indication can be received on any of the line DN keys.
Communication Manager endpoint user experience
Communication Manager does not support a Call Waiting feature.
Device Adapter endpoint user experience
The database migration tool will create one extra call appearance for the primary extension. Device Adapter adds no special logic. The extra DN key allows the call to be presented to the user even when the first is busy.
For more information, see Call Waiting in Appendix H: Call processing features and services.
