With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgprsCgPktsQSize
Cisco GPRS Charging Packets Q Size
1.3.6.1.4.1.9.9.192.1.1.9
The maximum size of the GGSN's queue of outstanding charging data transfer requests.
Back to CISCO-GPRS-CHARGING-MIB MIB page.
IPHost Network monitor allows you to monitor cgprsCgPktsQSize 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.