For SIP to SIP calls, RTP doesn't necessarily goes thru the server. Only Signalling goes to the servers. This means no bandwidht usage for the provider.
For SIP to PSTN calls, it has to goes thru a media gateway (owned by the provider) which may be seperate from the sip server.
Vikki.
On 11/2/06, Martin Joseph
<[EMAIL PROTECTED]> wrote:
On 2006-11-02 07:34:15 -0800, mail-lists < [EMAIL PROTECTED]> said:
<snip>
> My question is this: How do huge voip companies like vonage handle
> bandwidth. I'm pretty sure that they have to have sufficient bandwidth
> available for X numbers of simultaneous calls, in other words ALL VOIP
> traffic runs through their servers, right? My boss is of the mind that
> there is no way that this is a viable business model and his insistence
> has me doubting myself.<snip>
For one thing, I suppose they use codecs that compress the voice data
as much as possible. Probably g729, or ilbc or some such.
Also, it's not true that all the traffic need to flow through there
servers. Once the connections are setup in a well designed system, the
data could flow directly.
Marty
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