On 07/06/12 12:30, Justin Finkelstein wrote: > > I have to say though: I don't know much about VoIP or the amount of > bandwidth it requires, so I thought here would be a good place to ask.
An uncompressed a-law audio stream is 64k/s but obviously as 20ms RTP/UDP/IP/Ethernet packets it has some overhead which can nearly double that. Compression saves some, and so do multiplexing protocols like IAX, carrying several calls at once. A slow broadband line of 2Mb/s was same capacity as an ISDN 30 (i.e. 30 calls at once). Lots of VoIP is not going to make much difference - the big issues are streaming video
