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- Path: sparky!uunet!dziuxsolim.rutgers.edu!pilot.njin.net!birchall
- From: birchall@pilot.njin.net (Shag)
- Newsgroups: comp.dcom.modems
- Subject: PPI<->Telebit, Zoom<->Telebit connx (Re: PPI Modem...)
- Message-ID: <Dec.28.14.51.07.1992.13651@pilot.njin.net>
- Date: 28 Dec 92 19:51:07 GMT
- References: <HyDHwB3w165w@mcgort.com>
- Organization: Screaming in Digital, the Queensryche Digest
- Lines: 42
-
- rlm@mcgort.com (Robert McMillin) writes:
-
- >Sorry that I didn't detail all my experiences and experiments; I did
- >indeed try a T2500 from my home, and had absolutely no trouble connecting
- >to the T2500 at work. The PPI PM14400FXSA modem just has a bad time
- >with the T2500 over my home lines, and that's all there is to it.
-
- My PPI had difficulties connecting to T3000's until I got the 1.15m ROM
- upgrade. Telebits are very good modems, but at their performance levels,
- the "margin of error" for connections is pretty small. I suspect that
- a mixed-brand connection over the "noisy" lines you have would be destined
- to fail most times. (Two modems from the same manufacturer generally get
- along better :)
-
- >I tried the same setup (PPI to T2500) at a friend's house with cleaner
- >lines, and it worked great. (I think that the v.whatever implementation
- >on the Telebits may be a bit weak, as I have had problems with this
- >on older modems as well -- things like carrier dropping for no reason
- >(yes, I know enough to silence Call Waiting), and others.
-
- If your 2500's are particularly early models, they might be a little buggy.
- Telebit makes very good equipment, but nobody puts out a perfect modem on
- the first release. ;)
-
- >Specifically, I was using a Zoom v.42bis/2400 bps modem, which worked as
- >long as I forced 2400 mode on the Telebit side, or forced the Zoom to
- >wait for carrier AFTER the Telebit had gone through its PEP hunt sequence.)
-
- The PEP hunt sequence (for the uninitiated, that strange mating-call a
- Telebit does before it gets into normal carriers) does tend to cause a lot
- of problems, particularly for those who run with only a 30-second wait.
-
- I'll be nice and just say that using a Zoom certainly does not increase your
- odds of getting a good connection. :)
-
- Shag
-
- --
- Shag | Operator, ShagNET | Editor of "Screaming in Digital"
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