Supported number of digits in a call log
For a direct incoming external call from an ISDN or a SIP network, Communication Manager displays up to 21 digits of the calling-party number on a DCP, an H.323, or a SIP endpoint. Earlier, Communication Manager displayed only 7 digits of the calling-party number.
The missed call log and the answered call log of the endpoints display all 21 digits. Communication Manager also stores all 21 digits of an incoming external call from an ISDN or SIP network that is redirected by coverage, forwarding, bridging, or a similar feature in the missed call log and the answered call log of the endpoints