With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdspXAvailableSigBandwidth
Cisco Digital Signal Processing X Available Sig Bandwidth
1.3.6.1.4.1.9.9.86.1.2.2.1.4
The percentage of channels on the DSP currently available for signaling calls.
Back to CISCO-DSP-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cdspXAvailableSigBandwidth on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.