With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCfgReliable1xxRspStr
Cisco Sip Configure Reliable1xx Rsp Str
1.3.6.1.4.1.9.9.152.1.1.4.3
This object specifies the string that will be placed in either the Supported or Require SIP header, as specified by cSipCfgReliable1xxRspHdr.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCfgReliable1xxRspStr on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.