SIP Allow Message - Jitsi

I’m trying to get SIP messaging working using MessageSend. My preferred softphone is Jitsi, but I can’t seem to get Jitsi to send messages. It will receive them, however, if sent by a different user agent, but it won’t allow replies as it says that the protocol does now allow it. Looking at the SIP debug output, there is no “MESSAGE” in the ALLOW line from the server (Asterisk) although there is in the allow line from the user agent (Jitsi), not that I really know what I’m looking for. Some SIP debug out put below.

It does work with Ekiga and X-Lite, so I can only assume they are less fussy about the ALLOW.

Does anyone have any ideas, please? Thanks!

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.232.102:5060;branch=z9hG4bK-353936-2e30437837fee7d3e62572728ab750e2;received=192.168.232.102;rport=5060
From: “836” sip:836@10.168.252.135;tag=89dff676
To: “836” sip:836@10.168.252.135;tag=as6f84296c
Call-ID: e3e0269708c97e5717428308a8d15d31@0:0:0:0:0:0:0:0
CSeq: 26 REGISTER
Server: Asterisk PBX 10.7.0-rc1
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Expires: 60
Contact: sip:836@192.168.232.102:5060;transport=udp;registering_acc=10_168_252_135;expires=60
Date: Thu, 26 Jul 2012 19:00:06 GMT
Content-Length: 0

<— SIP read from UDP:192.168.232.102:5060 —>
OPTIONS sip:10.168.252.135 SIP/2.0
Call-ID: 6ccb1cd2c02ef1ffb18c3baade45feea@0:0:0:0:0:0:0:0
CSeq: 29 OPTIONS
From: “836” sip:836@10.168.252.135;tag=a98e047b
To: “836” sip:836@10.168.252.135
Via: SIP/2.0/UDP 192.168.232.102:5060;branch=z9hG4bK-353936-99c01d6e333abca29a176755367e8a81
Max-Forwards: 70
Contact: “836” sip:836@192.168.232.102:5060;transport=udp;registering_acc=10_168_252_135
User-Agent: Jitsi1.0-build.3967Windows 7
Allow: INFO,OPTIONS,MESSAGE,BYE,REFER,SUBSCRIBE,ACK,CANCEL,PUBLISH,NOTIFY,INVITE
Allow-Events: refer
Content-Length: 0