Hi Ramzi,
Maybe this will help :)
Transfer Type
Select how Cisco Unity transfers calls:
Release to Switch-Cisco Unity puts the caller on hold, dials the extension, and releases the call to the phone system. When the line is busy or is not answered, the phone system-not Cisco Unity-forwards the call to the subscriber or handler greeting. This transfer type allows Cisco Unity to process incoming calls more quickly. Use Release to Switch only when call forwarding is enabled on the subscriber extension.
Supervise Transfer-Cisco Unity acts as a receptionist, handling the transfer. If the line is busy or the call is not answered, Cisco Unity-not the phone system-forwards the call to the subscriber or handler greeting. Use Supervise Transfer only when the number of rings before forwarding (or the time to wait before forwarding) on the phone system is set to more than the number of rings (or time to wait) that Cisco Unity supervises the call.
The Transfer Type option is unavailable when Transfer Incoming Calls is set to the No (Send Directly) option.
Transfer options apply only to indirect calls; they do not apply when an outside caller or another subscriber dials a subscriber extension directly.
Default: Release to Switch.
Hope this helps!
Rob
