> This is nothing to do with SIP. It is an RTP issue, common to everything > which uses RTP - SIP and H.323 included.
I have been reading the RFCs and I'm a bit more familiar with how it works now although the algorithms are a bit over my head. I am somewhat new to RTP/VoIP, but I have a strong telecom/networking background so it makes things a bit easier to understand since they share a lot of common features.. I just thought from the post mentioning only IAX2 and "some of the other codecs" that SIP et. al. would be ignored... >Sending no packets is perfectly valid, and normal, in RTP. If the receiving >end takes no packets (other than, perhaps, an extremely long silence) as a >disconnect it does not comply with the RTP spec. DTX is much despised, >and CNG only slightly better. They just sound good (pun intende) on paper. While I realize that hanging up on silence is not a desired behavior, unfortunately lots of things are out of spec... Look at Cisco's POE implementation for example, it's completely reversed from 802.3af specs... If * had at least some kind of continuous CNG capability it would help in these situations... Silence should be acceptable and even desired because it saves bandwidth, but apparently some people (and switches) find it uncomfortable... -Chris _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users