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Kelum Navaratne kelum.nava at gmail.comHi Every one, Would the IP.Access nanoBTS works behind a NAT with OpenBSC ? i.e. two BTSs in two different locations behind NAT connecting to NITB. im trying to make a call, but it seems rtp has some problem. rgds Nava On Tue, Oct 16, 2012 at 6:49 PM, Kelum Navaratne <kelum.nava at gmail.com>wrote: > Hi Andreas, > > Thank you very much. This is a good start for me. I also need to work with > freeswitch. Not asterisk. And simple point to point sip is more than enough > and rtp bridge would be fantastic. > > Would it work with amr codec as well ? Or only gsm full rate/ h. Rate? > > Im trying to find the lcr git location of jolly/new. Can you please give > me the url. I cant find it on openbsc git. > > Thanks again. > > Nava. > > > On Tuesday, October 16, 2012, Andreas Eversberg wrote: > >> hi kelum, >> >> in order to use sip, you need jolly/new branch of lcr and jolly/rtpmux of >> openbsc. the sip implementation of LCR is quite simple, so no >> authentication or oder features - just simple point-to-point SIP. if you >> run confiure of LCR, check if sip is enabled. in order to add a SIP >> interface, do the following at interface.conf: >> >> [sip] >> sip <local ip>[:<local port>] <remote ip>[:<remote port>] >> earlyb yes >> tones no >> >> you need to define local IP that will be used to connect to remote SIP >> endpoint. don't use localhost, if the endpoint is on a different machine, >> because this IP is also used for RTP. if you use same machine, you need to >> have different ports. you may change local port, by adding a local port or >> you may change port of SIP endpoint and then add remote port. >> >> i have tested it with freeswitch, but asterisk should work also. >> >> you may then also try at interface.conf below "[sip]" definition: >> >> rtp-brige >> >> then the codec (full rate or enhanced full rate) is negotiated between >> mobile and the remote SIP endpoint. the SIP endpoint must support at least >> one of it. >> >> regards, >> >> andreas >> >> >> >> >> >> >> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20130123/57e411c3/attachment.htm>