With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmedxCntxShortestContextLife
cmedx Cntx Shortest Context Life
1.3.6.1.4.1.9.10.104.1.2.3.1.5
The shortest life span for the contexts in the media gateway link.
Back to CISCO-MEGACO-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cmedxCntxShortestContextLife 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.