What are you getting? the default is to transmit the caller ID to the cellphone
Change External CID Configuration
Mode:
Default: Transmits the Callers CID if allowed by the trunk.
Fixed CID Value: Always transmit the Fixed CID Value below.
Outside Calls Fixed CID Value: Transmit the Fixed CID Value below on calls that come in from outside only. Internal extension to extension calls will continue to operate in default mode.
Use Dialed Number: Transmit the number that was dialed as the CID for calls coming from outside. Internal extension to extension calls will continue to operate in default mode. There must be a DID on the inbound route for this. This will be BLOCKED on trunks that block foreign CallerID
Force Dialed Number: Transmit the number that was dialed as the CID for calls coming from outside. Internal extension to extension calls will continue to operate in default mode. There must be a DID on the inbound route for this. This WILL be transmitted on trunks that block foreign CallerID