Using FS 1.0, I'm having problems registering some devices, Android 4.0.4, Linphone 3.4.0 under Wifi works Android 2.3.4, Linphone 3.4.0 under Wifi works it fails here iPhone IOS 5.1.1, Linphone 3.5.2 under Wifi fails iPod IOS 5.1.1, Linphone 3.5.2 under Wifi fails As far as i seen im getting error 400 when IOS is trying to register here is failling dump REGISTER sip:corporate.xxxx.com SIP/2.0 Via: SIP/2.0/UDP 189.146.85.112:10649;rport;branch=z9hG4bK842453785 From: <sip:107@corporate.xxxx.com>;tag=1058009119 To: <sip:107@corporate.xxxx.com> Call-ID: 508811206 CSeq: 19 REGISTER Contact: <sip:107@189.146.85.112:10649:10649;line=06e1d79779fb5b1> Max-Forwards: 70 User-Agent: Linphone/3.5.2 (eXosip2/3.6.0) Expires: 600 Content-Length: 0 SIP/2.0 400 Bad Contact Header Via: SIP/2.0/UDP 189.146.85.112:10649;rport=10649;branch=z9hG4bK842453785 From: <sip:107@corporate.xxxx.com>;tag=1058009119 To: <sip:107@corporate.xxxx.com>;tag=1FvU4KjDH0ggg Call-ID: 508811206 CSeq: 19 REGISTER Content-Length: 0 here is workig request REGISTER sip:corporate.xxxx.com SIP/2.0 Via: SIP/2.0/UDP 189.146.85.112:5060;rport;branch=z9hG4bK86735004 From: <sip:104@corporate.xxxx.com>;tag=134885940 To: <sip:104@corporate.xxxx.com> Call-ID: 591954255 CSeq: 2 REGISTER Contact: <sip:104@189.146.85.112:5060;line=26e5d923f2f5be6> Authorization: Digest username="104", realm="corporate.xxxx.com", nonce="f418e392-b7d1-43e9-98d5-b841134ad19c", uri="sip:corporate.xxxx.com", response="f599fa83cb2660595d61bb3cadba6c5b", algorithm=MD5, cnonce="0a4f113b", qop=auth, nc=00000001 Max-Forwards: 70 User-Agent: Linphone/3.4.0 (eXosip2/unknown) Expires: 3600 Content-Length: 0 SIP/2.0 200 OK Via: SIP/2.0/UDP 189.146.85.112:5060;rport=5060;branch=z9hG4bK86735004 From: <sip:104@corporate.xxxx.com>;tag=134885940 To: <sip:104@corporate.xxxx.com>;tag=Xc0Hp99F0S0Um Call-ID: 591954255 CSeq: 2 REGISTER Contact: <sip:104@189.146.85.112:5060;line=26e5d923f2f5be6>;expires=3600 Date: Wed, 18 Jul 2012 02:54:14 GMT User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-261505a 2012-02-13 13-50-21 -0600 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: timer, precondition, path, replaces Content-Length: 0 Just wondering how to workarround this regards LD