With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
callHistoryLogicalIfIndex
call History Logical If Index
1.3.6.1.2.1.10.21.1.4.3.1.5
This is the ifIndex value of the logical interface through which this call was made. For ISDN media, this would be the ifIndex of the B channel which was used for this call.
Back to DIAL-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor callHistoryLogicalIfIndex 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.