G729 is no wear near 8kbits with overhead its more along the lines of 32kbps unless you start trunking your channels then it gets smaller.
DSL, and ADSL are terms dsl is really nothing than an acronym for digital subscriber line with out a letter in front of it. ADSL - mean asynchronous usually the grade you get as a standard hight speed it has good downstream but poor upstream, voip requires bandwidth in both directions :) SDSL - synchronous dsl, sends and receives at the same speed <-- this is really what you want. and then there are ldds loops which you can get from select carriers, and the modems will have some cool names like this HDSL GHDSL (last one i saw of this did 16megs in each direction :) ) There are many more flavors than that but those are your basic ones. If you have a really good adsl connection you can squeeze 10 g729 calls but latency to your provider becomes a major factor. G729 sounds good it the latency is low and there is no packet loss if the latency is high it will sound worse than gsm. Hope that helps some. Regards, Philip Mullis -----Original Message----- From: Aloysius Thevarajah Lloyd [mailto:[EMAIL PROTECTED] Sent: Mon 7/23/2007 9:52 PM To: TAUG Subject: [on-asterisk] VOIP Bandwidth - Calculation Hi, For a 10 SIP /g729 simultaneous use. What is the Best internet connection recommended. DSL or ADSL What is the upload and download speed required? How to calculate the the band width? ( g729a - 8 kbit/s 10 ms frames) if u can guide me greatly appreciated. Thank you -- Lloyd
