On Fri, Jun 25, 2010 at 11:00 AM, Cary Fitch <ca...@usawide.net> wrote: > I see some talking about TNTs in this forum. Those are 672 lines or in some > versions double that, what is used behind them to do the processing, etc.
So a channelized DS3 is roughly 28*23 channels in US if you do one D-channel per PRI (other options are possible). That gets you 644 channels. You can either buy gear that terminates a channelized DS3 natively, like a Cisco AS series device to voip-ify the PSTN channels, or you can get a device like an Adtran MX2800 which breaks out the DS3 into individual T1/PRIs, which you can then terminate with a number of different technologies, including a lot of Digium cards, or you can voipify with appliances like a Cisco 3845. So you can get a lot of asterisk boxes that have native DAHDI channels, or you can put a layer in-between that adds expense, but increases routing options. That's how the DS3 works. To bundle DS3s, you generally get fiber to the premise, and demux it at your data center using equipment approved or provided by your telco of choice. If you're talking 30k channels, that's some bigger glass, which then demuxes down to OC-whatever, which eventually demuxes to lots of DS3s, but honestly I've never worked at a scale past a handful of DS3s, so there may be a vastly superior way to do things at that scale. -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users