On Tue, 21 Feb 2012 19:00:48 +0530, virendra bhati <virbh...@gmail.com> wrote: >how many UDP ports is required for 1 call. and why .
If you mean a voice call, it appears that each host must open three UDP sockets: - One to send/receive SIP commands - Two to receive sound (one for RTP, one for RTCP; The first port is even, the other is odd) http://www.cs.columbia.edu/~hgs/rtp/faq.html#ports www.freecode.com/articles/nat-traversal-for-the-sip-protocol (great article, but missing images) "Understanding the relationship between SIP and RTP" http://blog.lithiumblue.com/2007/07/understanding-relationship-between-sip.html -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
