Hello,

rport and Via headers are used for routing the SIP responses back to the device sending the request. They are not used at all for routing INVITE requests.

The tutorial you refer to is generating a new REGISTER from Kamailio to Asterisk, putting in it the Contact header with the address of kamailio. So Asterisk should send the INVITE to kamailio.

Cheers,
Daniel

On 28/03/14 19:37, Marc Soda wrote:
Basically, I'm trying to get Asterisk to send all future INVITEs to Kamailio on port 5060 and not the source port of the REGISTER. My REGISTER looks like this:

U 1.1.1.1:59738 <http://1.1.1.1:59738> -> 2.2.2.2:5060 <http://2.2.2.2:5060>
REGISTER sip:2.2.2.2:5060 <http://2.2.2.2:5060> SIP/2.0.
Via: SIP/2.0/UDP 1.1.1.1:5060;branch=z9hG4bK404.05c2e5a7.0.
Via: SIP/2.0/UDP 3.3.3.3:10654;rport=56417;branch=z9hG4bK-d8754z-a5ad572f022375cb-1---d8754z-.
Max-Forwards: 16.
To: <sip:sip7878_spqa@2.2.2.2 <mailto:sip%3Asip7878_spqa@2.2.2.2>>.
From: <sip:sip7878_spqa@2.2.2.2 <mailto:sip%3Asip7878_spqa@2.2.2.2>>;tag=d8932554.
Call-ID: OWU3NDM5N2MxOTVkOTM5YjE4MjZkMDFjYWIyN2JlNjI..
CSeq: 2 REGISTER.
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE. Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri.
User-Agent: Z 3.3.21933 r21903.
Allow-Events: presence, kpml.
Content-Length: 0.
Path: <sip:3.3.3.3:56417;lr>.
Contact: <sip:sip7878_spqa@1.1.1.1:5060 <http://sip:sip7878_spqa@1.1.1.1:5060>>.
Expires: 3600.
.

Subsequant INVITEs are sent to 1.1.1.1:59738 <http://1.1.1.1:59738> and not 1.1.1.1:5060 <http://1.1.1.1:5060>. I need them to go to 1.1.1.1:5060 <http://1.1.1.1:5060>.


On Fri, Mar 28, 2014 at 2:28 PM, Marc Soda <ms...@coredial.com <mailto:ms...@coredial.com>> wrote:

    I have a Kamailio server forwarding REGISTERs to an Asterisk box,
    similar to the way Daniel shows here:

    http://kb.asipto.com/asterisk:realtime:kamailio-4.0.x-asterisk-11.3.0-astdb

    Can I force Kamailio to append rport=5060 to the topmost Via
    header, prior to forwarding the REGISTER to Asterisk?  I tried
    add_local_rport() but it only included 'rport' and not 5060.

    Thanks,
    Marc




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