With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvVoIPCallActiveReversedDirectionPeerAddress
Cisco Voice Vo IP Call Active Reversed Direction Peer Address
1.3.6.1.4.1.9.9.63.1.3.2.1.45
This object store the reversed direction peer address If the address is not available, then it will have a length of zero. If the call is ingress then it contains called number and if the call is egress then it contains calling number.
Back to CISCO-VOICE-DIAL-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor cvVoIPCallActiveReversedDirectionPeerAddress on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
