Given:
SIP Marshal:      marshal.vovida.com         192.168.5.10 : 5060
H.323 Translator: h323translator.vovida.com  192.168.5.20 : 3498
H.323 Endpoint:   swirl.vovida.com           192.168.5.30
    RAS Port:         1719
    Q.931 Port:       1720

Ideal
-----
REGISTER sip:vovida.com SIP/2.0
Via: SIP/2.0/UDP h323translator.vovida.com:3498
Via: RAS/H.225.0(2/98)/UDP swirl.vovida.com:1719
To: sip:1234@vovida.com; callSignalAddress="192.168.5.30:1720"
From: sip:1234@h323translator.vovida.com
Call-ID: 70710@vovida.com
CSeq: 1 REGISTER
Contact: <sip:1234@h323translator.vovida.com:3498;transport=udp>
Expires: 7200

Current implementation
----------------------
REGISTER sip:192.168.5.10:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.5.20:3498
To: sip:1234@192.168.5.10
From: sip:1234@192.168.5.10
Call-ID: 70710@vovida.com
CSeq: 1 REGISTER
Contact: <sip:1234@192.168.5.20:3498;transport=udp>
Expires: 7200

Compromise implementation
-------------------------
REGISTER sip:192.168.5.10:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.5.20:3498
Via: SIP/2.0/UDP 192.168.5.30:1719
To: "Ian Cahoon"<sip:1234@192.168.5.10>; callSignalAddress="198.168.5.30:1720"
From: "Ian Cahoon"<sip:1234@192.168.5.10>
Call-ID: 70710@192.168.5.20
CSeq: 1 REGISTER
Contact: <sip:1234@192.168.5.20:3498;transport=udp>
Expires: 7200
======================================================================

Copyright 2000-2003, Cisco Systems, Inc.
THE INFORMATION HEREIN IS PROVIDED ON AN "AS IS" BASIS, WITHOUT ANY
WARRANTIES OR REPRESENTATIONS, EXPRESS, IMPLIED OR STATUTORY, INCLUDING
WITHOUT LIMITATION, WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.

$Id: REGISTER.txt,v 1.4.2.1 2003/03/28 05:26:01 bko Exp $
