[asterisk-users] Where is the Digium DS3 card?

[Jay R. Ashworth]

On Mon, Apr 07, 2008 at 02:46:48AM -0400, Alex Balashov wrote:
> The point is that most people that want a DS3 interface really do want 
> to pump in a DS3's worth of calls, more or less, in which case they 
> really can't afford to have those DS1s going spare just for redundancy's 
> sake.  And if you are doing substantially less than a DS3's worth of 
> calls, you probably shouldn't be looking at a DS3 interface to begin 
> with unless that's just an incredibly lucrative way to get channelised 
> PRIs in from a vendor - and with typical the cost of UNE DS3 loops vs 
> T1s, that's not necessarily so.

My understanding was that the breakeven point for T-3 transport was
something like 8-10 T-1's; no?

> So yes, a single gateway handling a DS3 can go down.  But so can an M13 
> mux.  You've got single points of failure either way.

Sure.  But are the gateways as redundant as, say, that Adtran mux that
Steve was raving about?

> Yes, but total cost of ownership goes up because you need someone to do 
> all that, and even so, despite the impressive uptime you mention, PCs do 
> need a lot more maintenance, upkeep and worry.
> 
> With dedicated media gateways, you just plug in, set up and it works.

And that's a point.

Cheers,
-- jra
-- 
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