Randy Bush wrote:
More likely is that the phones on the LAN are SIP and the boxes on the WAN are talking IAX, since that seems to make the most sense to me.1. Control a call, (maybe you want to do some ACL type filtering,Hmmm. Post setup, which clearly needs to go through all servers
maybe you want to keep track of usage, maybe you just to be in
control...)
(or pbxen) in path, I don't see a win here. Send more clue.
It's not always so sneaky... imagine that I'm a VoIP provider targeting homes and small business. I'm best to buy minutes in bulk from AT&T and/or MCI or any carrier who can offer super-cheap rates in bulk. These carriers don't sell VoIP to home users, they sell it to people like me. I still don't really want my users or competition know where I buy my minutes from, nonetheless. And AT&T doesn't really want a direct connection to the home user. So it works out that I am the logical middle-man, especially if I can trunk calls within a few hops of the user (like if I'm also their DSL provider as well) to save everybody bandwidth.hide one end from the other. I have a customer and a carrier. I
don't want one to know who the other is lest they get together
and cut me out of the equation.
Yikes! Despite ad homina on this list, even I am not that
sneaky. But I can see folk having legitimate needs such as
this in an emerging market in desperate times.
Most significantly, this hierarchal paradigm is the most familiar to telcos and telephone people in general.
Nick
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