[Serusers] udp_send failed

Hello, I started SER performance test with sipp traffic generator on FreeBSD 5.3. After starting 300 calls per second I got the following error: Mar 14 16:35:09 devel ser[1506]: msg_send: ERROR: udp_send failed Mar 14 16:35:09 devel ser[1506]: ERROR: udp_send: sendto(sock,0x2a258ae0,568,0,0x286be26c,16): No buffer space available(55) SER send "503" the service not available. I don't use mediaproxy/rtpproxy to exclude problems there. Could someone help me with this? Thank you, Tina __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com