Call Forwarding is programmed & activated at the telephone. Call Rerouting is programmed in the system database using ESM programming forms.
If someone call forwards their phone to another answer point, the forwarding they programme overrides the equivalent rerouting programmed in the system database for their phone.
Precedence:
- Call Forward - Always
- Call Reroute - Always
- Call Forward - Busy/No Answer
- Call Reroute - Busy/No Answer