Hi, I don't know if anyone has experienced this. The ser stops getting any packets, ser log shows no activity. When I do "netstat -an", I got this, Proto Recv-Q Send-Q Local Address Foreign Address State udp 261580 0 80.1.2.3:5060 0.0.0.0:* udp 85224 0 0.0.0.0:35940 0.0.0.0:* udp 0 0 0.0.0.0:35941 0.0.0.0:* udp 47704 0 0.0.0.0:35942 0.0.0.0:* udp 0 0 0.0.0.0:35943 0.0.0.0:* I restarted ser several times, didn't help. So I restarted rtpproxy. Ser started processing packets and the recv-q drops to 0. I wonder what could cause recv-Q accumulating packets. Everything was running fine without any problem for a long time. I haven't made any change to either ser or rtpproxy recently. Any suggestions? Thanks, Richard _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers

Thanks Jan. It is really good to know. I tried udp, got quite a few udp connections even for a very low volume test system, a netstat -na shows, udp 0 0 127.0.0.1:5059 0.0.0.0:* udp 0 0 127.0.0.1:33098 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33099 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33100 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33101 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33102 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33103 127.0.0.1:5059 ESTABLISHED udp 0 0 127.0.0.1:33104 127.0.0.1:5059 ESTABLISHED udp 0 0 66.1.2.7:35032 0.0.0.0:* udp 0 0 66.1.2.7:35033 0.0.0.0:* udp 0 0 66.1.2.7:35034 0.0.0.0:* udp 0 0 66.1.2.7:35035 0.0.0.0:* You can see only one rtpproxy session here. But there are a bunch of connections for port 5059 which rtpproxy listens to. Any suggestions? Thanks, Richard