[SR-Users] MESSAGE is not successfull in Kamailio IMS

[Carsten Bock]

Hi,

what user agent are you using? IMSDroid or similar?
Quick note: 3GPP SMS over IP (sent as SIP MESSAGE) is never direct, but
always store & forward, so you need an SMSC...

Thanks,
Carsten
Am 21.11.2015 6:01 nachm. schrieb "Thierry Luo" <langsir at yeah.net>:

> Hi All,
>
> I installed kamailio on Ubuntu as IMS pCSCF/iCSCF/sCSCF. REGISTER is fine,
> but when I tried to send a MESSAGE (SMS) from one user to another, it was
> always not successful. I captured IP packets on the server, and it seemed
> that the error was caused on pCSCF.
>
> User1 and User2 are both behind their NAT network.  Suppose User1's private
> IP is Private_IP1, and User1's public IP (on router) is Public_IP1, and
> User2's private and public IPs are Private_IP2 and Public_IP2:
>
> User1                                pCSCF
> iCSCF                                     sCSCF
> user2
>                MESSAGE
>             ---------------->
>                                                                    MESSAGE
>
> --------------------->
>
> MESSAGE
>
> ------------------->
>
> MESSAGE
>
> <-----------------------------------------------------
>
> MESSAGE
>
>
> ----------------------------------------------------------------------------
> ---->
>
>
> Unfortunately, from the captured data on the server, in the last step, the
> MESSAGE was sent to the Private_IP2 of User2. It should be sent to the
> Public_IP2. Of course, the datagram with the destination of Private_IP2
> cannot reach User2 successfully.
>
> Please help analyze why the pCSCF sent the MESSAGE packet to User2's
> private
> IP instead of public IP. The configuration file was attached for reference.
>
>
> BR.
> Thierry Luo
>
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