With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnPcscfGroupName
Cisco Ggsn Pcscf Group Name
1.3.6.1.4.1.9.9.240.1.3.10.2.1.1
This group name is the identifier for the P-CSCF addresses configured.
Back to CISCO-GGSN-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnPcscfGroupName 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.