I have several CCME sites migrating to Telco Voice Mail and have found an unusal issue.
When an inbound call comes into the FXO port the FXO Port and the phone ring on the first two rings, but on the third and fourth ring only the FXO port shows ringing.
Cisco 1861 Router
Voice Port Configuration
connection plar opx imediate 75669
The addion of imediate to the connection command allows the phone to ring without waiting for caller-id, if I remove this command the FXO port rings on the first two rings, then the phone rings on the third and fourth rings.