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" <lang...@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 > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > >
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