With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgprsAccPtDtEnabled
Cisco GPRS Access Point Dt Enabled
1.3.6.1.4.1.9.9.183.1.3.1.1.42
This object represents the number of times Direct tunnel is enabled for the PDP contexts on this APN in Gateway.
Back to CISCO-GPRS-ACC-PT-MIB MIB page.
IPHost Network monitor allows you to monitor cgprsAccPtDtEnabled on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.