Our IP telephony provider requires that the UDP timeout be set to a minimum of 300s. Can it be changed in er7206, I think it is 120s at first. Or can an alternative change be made? We experience that after exactly 2 minutes a beep sound is heard, which repeats approximately every 2 seconds, at the other party of the call, but we cannot hear anything. The provider says that the UDP timeout must be changed to a minimum of 300 seconds.