On 6 December 2010 11:04, Bogdan-Andrei Iancu <[email protected]> wrote: > Hi Gavin, > > Do you think it will be helpful for you to "see" (from OpenSIPS) which are > the these ghost calls ? (I can describe a procedure to get such a listing).
Yes, that would be great. We have tracked them down and working with the testing vendor why they didn't send us an ACK. > Now, about what to do to prevent...More or less is about detecting so called > ghost calls....and you have several options: > > 1) callee/caller specific - if you are in control of one to the end points > (like you do LB over a bunch of Asterisk servers) : We do. Our OpenSIPS LBs also do the registration and have rtpproxy on them. > A) most of the media devices (PBX, GW, etc) implements media > timeout - if no RTP is recevied, they fire a BYE, so OpenSIPS will receive > this BYE and free the call Our media gateways (Asterisk) did do this, but OpenSIPS never got them for some reason. > B) as A), but using signalling, SST (when the call goes via > opensips, force SST on callee side). The detection will be done by the media > server, which will send a BYE OK, this could be good to compliment the no media. > 2) opensips specific - as LB in the middle, you can check the health of > the dialog by: > A) media level - both RTPproxy and mediaproxy offers RTP timeout > events (but this approach will require media relaying for all calls) OK, we relay media for NAT here. That will be seperate later. > B) signalling level - opensips cannot do much here at the moment > (like generating in dialog request for probing purposes) OK. > > > > Regards, > Bogdan > > Gavin Henry wrote: >> >> On 5 December 2010 01:07, Advantia VoIP Systems <[email protected]> wrote: >> >>> >>> Can you verify that a BYE is sent on one UAC and and received on the >>> other? >>> >> >> We're checking. It looks like it's the technical testing calls as part >> of the ITSPA Awards 2011 - http://www.itspaawards.org.uk/ >> >> We've got traces on as we speak. Even so, how can we handle not >> receiving BYEs on the lb? We're open to DOS, if we get lots of these >> our LBs will fill up. We have pike and ratelimit on anyway. >> >> Thanks. >> >> > > > -- > Bogdan-Andrei Iancu > OpenSIPS Bootcamp > 15 - 19 November 2010, Edison, New Jersey, USA > www.voice-system.ro > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > -- http://www.suretecsystems.com/services/openldap/ http://www.surevoip.co.uk _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
