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- Newsgroups: comp.dcom.isdn
- Path: sparky!uunet!ukma!gatech!udel!intercon!psinntp!adcmail!bcapps
- From: bcapps@atlastele.com (Brent Capps)
- Subject: Re: 23B+D (PBX) & 2B+D (Home)
- Message-ID: <1993Jan15.234844.14874@atlastele.com>
- Organization: Atlas Telecom Inc.
- References: <C0n63t.GBM@norstan.com> <1993Jan15.170510.12264@atlastele.com>
- Date: Fri, 15 Jan 1993 23:48:44 GMT
- Lines: 24
-
- In a previous article I wrote:
- >You wouldn't want to make the T1 23B+D to do this -- too many muxing
- >problems. Instead, you'd want to order the T1 to run ESF/B8ZS, DACS
- >out the DS0s to _24_ residences as leased lines and drive each DS0
- >as a BRI OPX on the PBX.
-
- On second thought this won't work either, a full 2B+D BRI won't fit onto
- a DS0. If you want your PBX to run the phone like an OPX as you suggest,
- this becomes a much trickier problem than it appears. First, in your
- original plan you were using 23B+D to drive 23 * 2B+D, which is a mismatch in
- both the number of B channels supported and the bandwidth of the D
- channels (23 * 16K = 368K BRI vs. 64K PRI). That would imply that the
- CO was performing a switching function between the BRI and PRI channels,
- so what you've got is not really an OPX.
-
- Somebody please tell me if I've overlooked something, but the more I think
- about this, the more it sounds like you would experience a lot of problems
- letting the PBX provide your "dial tone", as it were. You really need the
- CO to handle the switching, multiplexing, and concentration issues for you,
- which is to say that you *can't* run these like OPXs off your PBX.
- --
- Brent Capps |
- bcapps@agora.rain.com (gay stuff) | Quis corriget correctores ipsos?
- bcapps@atlastele.com (telecom stuff) |
-