Just to add the freeswitch keep sending udp messages to this phone, but the phone never process those messages, i have configured the phone to log at the debug level and it logs every sip message, but none of the messages sent from freeswitch, i use tcpdump and confirmed the packages went out from FS and sent to the phone, but the phone never processed those messages ... well anyway those are grandstream phones, a total piece of junk. This is the message FS keep sending . send 1490 bytes to udp/[172.24.103.44]:5060 at 22:30:23.032784: ------------------------------------------------------------------------ INVITE sip:215@172.24.103.44:5060;transport=udp SIP/2.0 Via: SIP/2.0/UDP 172.24.107.1:5090;rport;branch=z9hG4bK8tZND2F7QccBQ Max-Forwards: 69 From: "Ext. 216" <sip:216@172.24.107.1>;tag=cyQ3Fagm3FBvr To: <sip:215@172.24.103.44:5060;transport=udp> Call-ID: fff8c62a-3437-1230-1388-00224d56ac0c CSeq: 29693240 INVITE Contact: <sip:mod_sofia@172.24.107.1:5090> User-Agent: FreeSWITCH-mod_sofia/1.2.0-rc2+git~20120618T111915Z~11a745cf76+unclean~20120618T121534Z Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: timer, precondition, path, replaces Allow-Events: talk, hold, presence, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer Content-Type: application/sdp Content-Disposition: session Content-Length: 511 X-FS-Support: update_display,send_info Remote-Party-ID: "Ext. 216" <sip:216@172.24.107.1>;party=calling;screen=yes;privacy=off v=0 o=FreeSWITCH 1569664329 1569664330 IN IP4 172.24.107.1 s=FreeSWITCH c=IN IP4 172.24.107.1 t=0 0 m=audio 12058 RTP/AVP 0 8 4 18 3 2 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:4 G723/8000 a=rtpmap:18 G729/8000 a=rtpmap:3 GSM/8000 a=rtpmap:2 G726-32/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-11 a=ptime:20 m=video 12044 RTP/AVP 99 a=rtpmap:99 H264/90000 a=fmtp:99 profile-level-id=428014; packetization-mode=0; sprop-parameter-sets=Z0KADJWgUH5A,aM4Ecg== a=framerate:15 ------------------------------------------------------------------------ -- Nestor A. Diaz Ingeniero de Sistemas Tel. +57.1-485-3020 x 211 Cel. +57.316-227-3595 nestor@tiendalinux.com www.tiendalinux.com