Thanks for the input ... Kido ----- Original Message ----- From: "Kanuri, Seshu (Company IT)" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[EMAIL PROTECTED]> Sent: Thursday, November 18, 2004 3:47 PM Subject: RE: [Asterisk-Users] internet bandwidth
> /SNIP/ > Some corrections are needed: 6.3kbps of G723.1 will become around 17kbps > on the IP level without silence suppression because of the additional > overhead imposed by protocols like RTP, IP, etc . If you add the > Ethernet (or WAN protocol overhead) this will increase even more > (although slightly). > > Similarly, a voice stream of G729 at 8kbps will become around 24kbps on > the IP level, and slightly more on the Ethernet or ppp level (around 25 > kbps). > > So, for 20 channels of 6.3kbps G723.1, you will need around 340 kbps on > the IP level without silence suppression. > > For 20 channels with G729, you will need around 480 kbps. > > And of course, these calculations apply both ways (upstream & > downstream). > > If you chose IAX instead of SIP, you will save lots of bandwidth if all > (or most) of those 20 calls are directed to the same host. > > Best regards, > Vlasis. > > /SNIP/ > > Above calculations by Vlasis appears accurate, based on our experience. > These are the calcualtions many of our clients are experiencing. > > Seshu Kanuri > -------------------------------------------------------- > > NOTICE: If received in error, please destroy and notify sender. Sender does not waive confidentiality or privilege, and use is prohibited. > > _______________________________________________ > 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 > _______________________________________________ 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