Adding rport to outbound SIP INVITE

Hi,

Is it possible to add rport to the top Via for the outbound INVITE? The Kamailio be behind an AWS NAT Gateway and we’re having the issue with the provider not replying to the source port but instead 5060. From what I have understood if we add the rport; without value in the Via it will tell the receiver to reply to the source ip and port.

Here’s the route block for calls sent to the PSTN.

route[PSTN] {

                ds_select_dst(1, 4);

                force_rport();

                record_route();

                t_on_failure("FAILURE_PROVIDER");

                route(RELAY);
                exit;

}


The outbound invite towards PSTN looks like this, missing rport in the top Via

INVITE sip:[email protected] SIP/2.0
Record-Route: <sip:10.3.130.39:5060;lr;ftag=b9827f5a-fef3-42f6-b8a4-aded67374bfb;lr;vsf=AAAAAAAAAAAAAAAAAAAAAAABFhMACBBKBhFDQhMBQhgBSggVQQ8SQAEWBk8ACm5uZWN0ZWwuYXBw>
Via: SIP/2.0/UDP sbc.coolcompany.com:5060;branch=z9hG4bK350f.eb699686bbd2c208bd77d3d92fd5ed55.0
Via: SIP/2.0/UDP 10.2.8.34:5060;received=10.2.8.34;rport=5060;branch=z9hG4bKPj405acf54-c51d-4681-a7c7-9774ee63e219
From: <sip:[email protected]:5060>;tag=b9827f5a-fef3-42f6-b8a4-aded67374bfb
To: <sip:+4670xxxxxx@xxxxxxxx>
Contact: xxxx
Call-ID: bba640af-369e-4a6c-b5ec-3974919d98c9
CSeq: 5899 INVITE
Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, INFO, MESSAGE, REFER
Supported: 100rel, timer, replaces, norefersub, histinfo
Session-Expires: 1800
Min-SE: 90
Max-Forwards: 69
User-Agent: Voice SBC
Content-Type: application/sdp
Content-Length:   310



/M

__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions -- [email protected]
To unsubscribe send an email to [email protected]
Important: keep the mailing list in the recipients, do not reply only to the sender!