Which kind of methods for the detection are known to be in place? I mean, they simply block 5060 udp/tcp port or do they use some kind of protocol detection systems to catch RTP and SIP protocol even of other udp/tcp ports? Because that's a very interesting item for all the mobile voip capabilities, and if protocol detection is employed then some kind of open obfuscation technology could be evaluated for voip traffic. Let me know Fabio Roland Klabunde wrote: > This is most likely due to limitations of your mobile provider. Most > providers do not allow you to use GPRS/EDGE/HSDPA connections together > with SIP, RTP (because this offends their business models). > > Regards > > > Karthik Babu schrieb: > >> Hello Nanang , >> >> I have just noticed that the registration is failing and could not use >> the app using GPRS (tested on both e61 and n95 ) . >> >> >> Can you please advise ? >> >> >> >> >> >> >> -- >> Karthik >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >