With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cItpSccpGttGtaAddr
Cisco Itp Sccp Gtt Gta Addr
1.3.6.1.4.1.9.9.233.1.5.1.1.5
The Global Title Address is 8 octets of the Called Party Address (CDPA).
Back to CISCO-ITP-SCCP-MIB MIB page.
IPHost Network monitor allows you to monitor cItpSccpGttGtaAddr on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.