Users use the Call Forwarding Off-Net capability to forward calls to an off-network destination. However, you can restrict access to the Call Forwarding Off-Net capability to specific users.

If the Coverage of Calls Redirected Off-Net (CCRON) capability is enabled, and the called user has a coverage path, the system monitors a call for call progress tones. If no one answers the call at the off-network destination, or if the destination is busy, the system returns the call to the internal extension. For more information on the Call Coverage feature, see Administering Avaya Aura® Communication Manager.

The system can bring the call back for call-coverage processing if the coverage criteria of the principal are satisfied at the forwarded-to destination.

If the CCRON capability is enabled, but the called user does not have a coverage path, the system does not monitor a call for call progress tones. The system leaves the call at the off-network destination.

When the system redirects an incoming trunk call off the network, the system sets a timer. The timer prevents the system from redirecting the incoming trunk calls off the network until the timer either expires or is canceled. The timer prevents calls that are redirected off the network from being routed back to the original telephone number from the off-network destination. Calls that are routed back to the original telephone number in this situation effectively create a loop that seizes trunks until trunks are no longer available.