Hi,

For our application to work we'd like to see not modified Contact: from Kamailio being sent towards our AS. Unfortunately this is not happening now. Below are REGISTER messages from client and message which is sent to AS. I wasn't able to find any logic in .cfg file so I thought this would be the place where I should post my problem. According to 3GPP TS 24.229, RFC 3261, RFC 5626 it seems like this is not the behavior which should be happening.

Thanks for any hints on this topic .

Dan

from client:

REGISTER sip:cloud.us.intinfra.com SIP/2.0
Via: SIP/2.0/TCP 10.66.134.82:49457;branch=z9hG4bK-1221069401;rport
From: <sip:18042522750@cloud.us.intinfra.com>;tag=1648902213
To: <sip:18042522750@cloud.us.intinfra.com>
Contact: <sip:18042522750@10.66.134.82:49457;transport=tcp>;expires=300;+g.oma.sip-im;language="en,fr"';+u.asmc.apn=<AppTokenId>
Call-ID: 5576f9d5-7540-1450-115d-daf9bfbc9ac8
CSeq: 1051036861 REGISTER
Content-Length: 0
Max-Forwards: 70
Authorization: Digest username="18042522750@cloud.us.intinfra.com",realm="cloud.us.intinfra.com",nonce="",uri="sip:cloud.us.intinfra.com",response=""
Allow: INVITE, ACK, CANCEL, BYE, MESSAGE, OPTIONS, NOTIFY, PRACK, UPDATE, REFER
Privacy: none
P-Access-Network-Info: ADSL;utran-cell-id-3gpp=00000000
User-Agent: RCSClient/OMA1.0
P-Preferred-Identity: <sip:18042522750@cloud.us.intinfra.com>
Supported: path

to aps:

REGISTER sip:imc-02.cloud.us.intinfra.com:5070 SIP/2.0
Via: SIP/2.0/UDP 10.96.173.249:6060;branch=z9hG4bK6261.27bddf04000000000000000000000000.0
To: <sip:18042522750@cloud.us.intinfra.com>
From: <sip:scscf.cloud.us.intinfra.com>;tag=182e61d5f332391bf011fae37904ee71-bdf8
CSeq: 10 REGISTER
Call-ID: 6de2ae0e57d6b4ff-31487@10.96.173.249
Content-Length: 0
User-Agent: Kamailio S-CSCF
Event: registration
Max-Forwards: 10
Expires: 420
Contact: <sip:scscf.cloud.us.intinfra.com>
P-Visited-Network-ID: cloud.us.intinfra.com
P-Access-Network-Info: ADSL;utran-cell-id-3gpp=00000000




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