With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonEchoAdminSourceVoicePort
Round Trip Time Monitor Echo Admin Source Voice Port
1.3.6.1.4.1.9.9.42.1.2.2.1.45
A string which specifies the voice-port on the source gateway. This object is applicable to RTP probe only.
Back to CISCO-RTTMON-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonEchoAdminSourceVoicePort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.