Hi Tech support,<br>&nbsp;<br>&nbsp;&nbsp;&nbsp; I just completed configuring my SER SIP Server,&nbsp; I&#39;m experiencing an intermittent error of &quot;SIP/2.0 500 Server Internal Error&quot; during REGISTER and whenever im using a mysql server for authentication. Most of the time, i can register successfully to the SIP Server but there are times i encounter error &quot;SIP/2.0 500 Server Internal Error&quot;. Do you have an idea what&#39;s causing this&nbsp; error.&nbsp; I have here a trace log of SIP Messages.&nbsp;&nbsp; I will greatly appreciate any support from you.<br>
&nbsp;<br>Thanks<br>Nel<br>&nbsp;<br>U CLIENT-IP:1384 -&gt; SERVER-IP:5060<br>&nbsp; REGISTER sip:SERVER-IP SIP/2.0..Via: SIP/2.0/UDP 192.168.1.136:5060;br<br>&nbsp; anch=z9hG4bK63235644e9b491928f5..From: 638871680007 &lt;sip:638871680007@116.6<br>
&nbsp; 8.141.251&gt;;tag=63283ff..To: 638871680007 &lt;sip:638871680007@SERVER-IP&gt;.<br>&nbsp; .Call-ID: <a href="mailto:321f3c-24e8a-491928f0@SERVER-IP..CSeq">321f3c-24e8a-491928f0@SERVER-IP..CSeq</a>: 6 REGISTER..Contact:<br>&nbsp; &quot;638871680007&quot; &lt;<a href="http://sip:638871680007@192.168.1.136:5060">sip:638871680007@192.168.1.136:5060</a>&gt;..Authorization: Digest<br>
&nbsp;&nbsp; username=&quot;638871680007&quot;, realm=&quot;SERVER-IP&quot;, nonce=&quot;49199956fed351b86a<br>&nbsp; 5c11c83d849a62144c5dcd&quot;, uri=&quot;sip:SERVER-IP&quot;, response=&quot;6a29e5839028f9<br>&nbsp; bc690c77fda9031054&quot;, algorithm=MD5..User-Agent: VaxSIPUserAgent/3.0..Expire<br>
&nbsp; s: 3600..Max-Forwards: 70..Content-Length: 0....<br>&nbsp;<br>U SERVER-IP:5060 -&gt; CLIENT-IP:5060<br>&nbsp; SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.1.136:5060;branch=z9hG4bK63235<br>&nbsp; 644e9b491928f5;received=CLIENT-IP..From: 638871680007 &lt;sip:638871680007<br>
&nbsp; @SERVER-IP&gt;;tag=63283ff..To: 638871680007 &lt;sip:638871680007@116.68.141<br>&nbsp; .251&gt;..Call-ID: <a href="mailto:321f3c-24e8a-491928f0@SERVER-IP..CSeq">321f3c-24e8a-491928f0@SERVER-IP..CSeq</a>: 6 REGISTER..Ser<br>&nbsp; ver: Sip EXpress router (0.9.6 (x86_64/linux))..Content-Length: 0..Warning:<br>
&nbsp;&nbsp; 392 SERVER-IP:5060 &quot;Noisy feedback tells:&nbsp; pid=16275 req_src_ip=203.1<br>&nbsp; 89.8.149 req_src_port=1384 in_uri=sip:SERVER-IP out_uri=sip:116.68.141<br>&nbsp; .251 via_cnt==1&quot;....<br>&nbsp;<br>U SERVER-IP:5060 -&gt; CLIENT-IP:1384<br>
&nbsp; SIP/2.0 500 Server Internal Error..Via: SIP/2.0/UDP 192.168.1.136:5060;bran<br>&nbsp; ch=z9hG4bK63235644e9b491928f5;rport=1384;received=CLIENT-IP..From: 6388<br>&nbsp; 71680007 &lt;sip:638871680007@SERVER-IP&gt;;tag=63283ff..To: 638871680007 &lt;s<br>
&nbsp; ip:638871680007@SERVER-IP&gt;;tag=04b7610a616ee809532470b3b2dd8840.0e13..<br>&nbsp; Call-ID: <a href="mailto:321f3c-24e8a-491928f0@SERVER-IP..CSeq">321f3c-24e8a-491928f0@SERVER-IP..CSeq</a>: 6 REGISTER..Server: Si<br>&nbsp; p EXpress router (0.9.6 (x86_64/linux))..Content-Length: 0..Warning: 392 11<br>
&nbsp; <a href="http://6.68.141.251:5060">6.68.141.251:5060</a> &quot;Noisy feedback tells:&nbsp; pid=16275 req_src_ip=<a href="http://203.189.8.14">203.189.8.14</a><br>&nbsp; 9 req_src_port=1384 in_uri=sip:SERVER-IP out_uri=sip:SERVER-IP vi<br>
&nbsp; a_cnt==1&quot;....