You could use a packet sniffer on your device to figure out what is happening. - J On Tue, Aug 26, 2008 at 4:07 AM, Roland Klabunde <roland.klabunde at freenet.de > wrote: > Reviewing your questions, I'm not that confident anymore, that my > initial statement was right. While answering to the initial post, I > recalled some posts from the german IPPhone-Forum, I read one or two > years ago. Seemed, that most of the technical limitations being in place > that time are no longer existent. I tried to doublecheck this, but I > couldn't find any clue about any significant technical brake for SIP. > Just T&C's against SIP and some technical limitations (bandwidth, prices > etc.) > > I would like to withdraw my statement and park it for further > investigations :) > > Regards > > > > > 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 > >> > >> > > > > > > _______________________________________________ > > 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 > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080831/6c8f4841/attachment.html
