Hotspot snmp problem

[Robin]

Hello,

A couple of us at work have been playing with a hotspot controller 
(Internet Subscriber Server II ISS-4000) using freeradius and mysql for 
authentication.  We are having problems with checkrad (totally to do with 
the AP not being nice).

I'm not sure what is the best way to handle this.  I can snmpwalk the 
device however the output does not appear to have information regarding 
logins.  The manufacturer does not respond to queries so I'm hoping someone 
else may have worked with this device.

Any help is appreciated,

Robin