With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmCallerID
cm Caller ID
1.3.6.1.4.1.9.9.47.1.3.1.1.11
The incoming caller identification of the current or previous call if this entry is not in the connected state.
Back to CISCO-MODEM-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cmCallerID on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.