Dear All Experts, Need help to solve freeswitch's mod_rad_auth capacity issue. I have deployed freeswtich 1.0.6 and enabled mod_rad_auth module. The Module is working fine till the concurrent request reaches till 245 after that Accounting is failing. Below is the Configuration. FreeSwitch : 1.0.6 RADIUS Server : FreeRADIUS2 Database server : MySQL 5.5 We are stress testing the with freeswitch to handle about 2000 concurrent calls with RADIUS AAA. without using RADIUS modules freeswitch is able to handle 2000 concurrent calls without any issues. For analysis we analysed from RADIUS server replies access-accept request, but in mod_rad_auth error says *"freeswitch : Invalid Digest Request from RADIUS server"* only if the concurrent session receives 245, till that all the requests are been working fine. Please guide me how to resolve this capacity issue, I can provide all the logs and configuration files if required. -- /Regards, Chetan Khatri/