[OpenSER-Users] UA Gets Disconnected

Hi All I am using 1.3 with tls enabled, I am using the default certs that come with the source code and I did disable all the tls_verify options, I can logon to my UA and make calls however there is one problem, every couple minutes the sip client disconnects and re-connects "it does have a re-login option". Any ideas why the UA is getting disconnected every couple of minutes ? Note: I have also tried with UDP without tls and the same thing happened upon monitoring SIP packets I noticed the following, as long as the client is connected it regularly sends REGISTER packets, when the disconnect happens the following happens SIP/2.0 401 Unauthorized Thx With Regards Ali Jawad