Hi, I can't connect to my server using SIP phone (Xlite on windows). i trace sip packets using #tcpdump port 5060 and i got this : tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 12:11:54.458829 IP 122.200.6.103.62482 > 122.200.6.104.sip: SIP, length: 539 12:11:58.520903 IP 122.200.6.103.62482 > 122.200.6.104.sip: SIP, length: 539 12:12:02.583054 IP 122.200.6.103.62482 > 122.200.6.104.sip: SIP, length: 539 12:12:06.645089 IP 122.200.6.103.62482 > 122.200.6.104.sip: SIP, length: 539 i guess i got no problem on my SIP phone, it's just my server that didn't respond to the sip request. Here's my server status : #openserctl moni [cycle #: 1072; if constant make sure server lives] Server:: OpenSER (1.3.0-notls (i386/linux)) Now:: Thu Jul 3 12:46:03 2008 Up since:: Thu Jul 3 12:09:29 2008 Up time:: 2194 [sec] Transaction Statistics: tm:UAS_transactions = 0 tm:UAC_transactions = 0 tm:inuse_transactions = 0 Stateless Server Statistics: sl:sent_replies = 0 sl:sent_err_replies = 0 sl:received_ACKs = 0 UsrLoc Stats: usrloc:registered_users = 0 usrloc:location-users = 0 usrloc:location-contacts = 0 usrloc:location-expires = 0 any suggestion would make my life easier.... thanks