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[djweis at internetsolv...]

I'm using FreePBX/Trixbox with Asterisk 1.4.17-1 trying to register
against a Sylantro server in front of a Metaswitch. I'm able to register
and receive inbound calls but outbound calls are rejected by the far
end. The username and password have been checked repeatedly. Putting the
same authentication and server IP into a softphone or polycom phone work
fine for inbound and outbound calls.

Has anyone made this work in the past? This is the rejection sent by the
switch at the other end:

SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP
10.1.4.110:5060;received=67.55.x.x;branch=z9hG4bK71d476d2;rport=5060
From: "515XXXXXXX" <sip:515XXXXXXX at 10.1.4.110>;tag=as6a5cd6c8
To: <sip:YYYYYYY at Z.Z.Z.Z>;tag=aprqngfrt-n2bk9j10000c6
Call-ID: 116d504b7b5fc29b6321786f5325cbc2 at 10.1.4.110
CSeq: 102 INVITE

dave