"ALMOST does not count except in horse shoes and hand grenades." Neither of which would I ever consider basing 12,000 call a day 5million minute/mo, multi-million dollar call center on.
That's 13.8 minutes per call. Pretty good going for a call center! It's probably tech support, I suspect mass phone marketing as a much lower ACD than this =)
Lets talk dollars and cents. Quantify the cost part of "IP connections can be made much more fault tolerant than TDM connections at a much lower cost." I understand the fault tolerance (but not so much in your no peering scenario). Cost of what? The cost of redundancy? Are you including the costs of lost revenue, sales, an hour of downtime costing $25k? Lets talk numbers since we both understand how the public internet works (or doesn't for realtime apps). Neither my voice DS3 nor my multilink 3xT1s have ever gone down and have always provided PERFECT voice quality.
Some gateways such as Quintum have the ability to automatically failover PSTN when speech quality becomes unacceptable. That might be what you're looking for... you'd still get some substantial savings by doing LCR & using multiple VoIP providers (ibasis, vsnl, teleglobe...) AND you would still get decent speech quality at all times.
Mind you, with this kind of volume, you might be able to negotiate pretty good deals over TDM anyways... it's what the VoIP players do: collect traffic to try and build volume so they can get better deals. Since you already have the volume (okay, 5MM is tiny in the grand scheme of things, but still pretty good going), and don't have a multi-site setup, VoIP might be lots of migration work and get you little in return.
And if it's a multimillion dollar operation, it's not like you can toy around with it too much either...
Cheers, Jean-Michel. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
