Hi,

In the ACK received after 200 OK the parameter 'receiving' is missing as well. What I observed is that to some ISP Kamailio is sending back 'received' parameter, but for some of them - is not sending. See below an invite where Kamailio is setting back 'received' parameter in via response:

-----------------------------------------------------------------------------------------------------------------------------------------------

INVITE sip:+123456789@X.X.X.X SIP/2.0
Via: SIP/2.0/UDP Y.Y.Y.Y:5060;branch=z9hG4bK6ae093c7;rport
Max-Forwards: 70
From: "+135792468" <sip:+135792468@Y.Y.Y.Y>;tag=as51334407
To: <sip:+123456789@X.X.X.X>
Contact: <sip:+135792468@Y.Y.Y.Y:5060>
Call-ID: 47e864f029a7b5d5700944aa4035e50b@Y.Y.Y.Y:5060
CSeq: 102 INVITE
User-Agent: COMPANY
Date: Fri, 30 Nov 2018 09:30:49 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Diversion: <sip:+135792468@Y.Y.Y.Y>;reason=unknown
Content-Type: application/sdp
Content-Length: 265
-----------------------------------------------------------------------------------------------------------------------------------------------

And this is 100 Trying generated by Kamailio:

-----------------------------------------------------------------------------------------------------------------------------------------------

SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK6ae093c7;rport=5060;received=X.X.X.X
From: "+123456789" <sip:+123456789@X.X.X.X>;tag=as51334407
To: <sip:+987654312@Y.Y.Y.Y>
Call-ID: 47e864f029a7b5d5700944aa4035e50b@X.X.X.X:5060
CSeq: 102 INVITE
Server: Nuacom SBC
Content-Length: 0

-----------------------------------------------------------------------------------------------------------------------------------------------

But for the below INVITE - Kamailio is sending back without 'received' parameter:

-----------------------------------------------------------------------------------------------------------------------------------------------

INVITE sip:+123456789@X.X.X.X:5060;transport=udp;user=phone SIP/2.0
Call-ID: 19685-LC-04d65acb-182279a33@hostname.isp.com
Contact: <sip:Y.Y.Y.Y:5060>
Content-Type: application/sdp
CSeq: 60513704 INVITE
From: "+987654321" <sip:+987654321@hostname.isp.com;user=phone>;tag=19685-KU-04d65acc-31cdba992
Max-Forwards: 69
Record-Route: <sip:Y.Y.Y.Y:5060;user=0000a839;lr;Cpkt=CPJIS;C=on-gw>
Supported: timer
To: <sip:+123456789@Y.Y.Y.Y:5060;user=phone>
Via: SIP/2.0/UDP Y.Y.Y.Y:5060;branch=z9hG4bK-CPJI-0cdf0724-27de6173
Allow: UPDATE,INVITE,INFO,ACK,OPTIONS,NOTIFY,BYE,CANCEL,PRACK
Min-SE: 90
Session-Expires: 600
User-Agent: GATEWAY
P-Asserted-Identity: "+987654321"<sip:+987654321@hostname.isp.com;user=phone>
P-Preferred-Identity: <sip:+987654321@hostname.isp.com;user=phone>
P-Charging-Vector: icid-value="IBCF-2-154357024260892067507758";orig-ioi=3GPP-UTRAN
Content-Length: 220

-----------------------------------------------------------------------------------------------------------------------------------------------

SIP/2.0 100 trying -- your call is important to us
Call-ID: 19685-LC-04d65acb-182279a33@hostname.isp.com
CSeq: 60513704 INVITE
From: "+123456789" <sip:+123456789@hostname.isp.com;user=phone>;tag=19685-KU-04d65acc-31cdba992
To: <sip:+987654321@X.X.X.X:5060;user=phone>
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK-CPJI-0cdf0724-27de6173;rport=5060
Server: Nuacom SBC
Content-Length: 0

-----------------------------------------------------------------------------------------------------------------------------------------------

In this case parameter 'received' is missing for all responses generated by Kamailio.

Could it be that in the first INVITE - i'm receiving the 'rport' parameter in via request, but in the second INVITE - it is not?
Thank You.

Daniel-Constantin Mierla <miconda@gmail.com>:
Hello,

ACK should be after 200 or a greater response code. Is only 100 without received, or also other 1xx or >200 responses sent out by Kamailio?

Cheers,
Daniel

On 29.11.18 18:24, Soltanici Ilie wrote:
Hi,

version: kamailio 5.1.6 (x86_64/linux) 7d1964

Also, i'm using force_rport(); in routing configuration file, but 'received' parameter anyway is missing :(
Thank You.
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