Hi, We've just upgraded (switched back to building from svn in case this was a git migration issue) and all our phones behind various networks on NAT won't registered anymore, whereas on version dated 2010-02-22 20:06 (don't have the revision) all these phones were fine and handled the the FS NAT features. No NDLB features on enabled or rport. They weren't on the 2010-02-22 20:06 version either. freeswitch@internal> recv 524 bytes from udp/[external_ip]:43078 at 09:45:02.413013: ------------------------------------------------------------------------ REGISTER sip:pbx1.xxxx.co.uk SIP/2.0 Via: SIP/2.0/UDP internal_ip:5062;branch=z9hG4bK892744790 From: "Gavin Henry" <sip:609@pbx1.xxxx.co.uk>;tag=706763496 To: "Gavin Henry" <sip:609@pbx1.xxxx.co.uk> Call-ID: 1553007081@internal_ip CSeq: 24 REGISTER Contact: <sip:609@internal_ip:5062> Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE Max-Forwards: 70 User-Agent: Yealink SIP-T28P 2.43.0.50 Expires: 3600 Content-Length: 0 ------------------------------------------------------------------------ send 641 bytes to udp/[external_ip]:5062 at 09:45:02.413206: ------------------------------------------------------------------------ SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP internal_ip:5062;branch=z9hG4bK892744790;received=external_ip From: "Gavin Henry" <sip:609@pbx1.xxxx.co.uk>;tag=706763496 To: "Gavin Henry" <sip:609@pbx1.xxxx.co.uk>;tag=gtDayy31FDN9K Call-ID: 1553007081@internal_ip CSeq: 24 REGISTER User-Agent: Our test PBX 1.0 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: timer, precondition, path, replaces WWW-Authenticate: Digest realm="pbx1.xxxx.co.uk", nonce="cf9aaa61-89bf-4d9d-adbb-51a068b23440", algorithm=MD5, qop="auth" Content-Length: 0 ------------------------------------------------------------------------ What's changed? Thanks, Gavin. -- http://www.suretecsystems.com/services/openldap/ http://www.suretectelecom.com