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- Path: sparky!uunet!sun-barr!sh.wide!wnoc-kyo!kuis!aegis!davidg
- From: davidg@aegis.or.jp (Dave McLane)
- Newsgroups: comp.dcom.modems
- Subject: Re: Optimizing Telebits.
- Message-ID: <2587@aegis.or.jp>
- Date: 7 Sep 92 07:39:37 GMT
- References: <1992Sep6.135028.22661@homecare.com>
- Organization: Aegis Society, Kyoto Japan
- Lines: 57
-
- jessea@homecare.com (Jesse W. Asher) writes:
-
- >I've had Telebits for quite some time and I've never really understood
- >how to optimize their performance. I've got a WorldBlazer now and I'm
- >just getting lousy throughput. I'm getting better thoughput using
- >V.32 than with PEP. For example, I'm connected right now to a site
- >with Trailblazers running in PEP and I'm getting a little less than
- >500bps. That's terrible!
-
- >Here's a couple of related issues:
-
- >2) When my WorldBlazer is chugging away and seems to be moving at a
- >good clip using PEP, it suddenly will stop and just sit there doing
- >absolutely nothing for between 8 and 10 seconds. Then the transfers
- >start up again.
-
- Depending on the host(s) this could be so-so normal for UUCP. There
- are regular delays of about 7 seconds with my T2500 to a Sun.
-
- >4) And last - this is just a little pet peeve. For some reason these
- >WorldBlazers think they need to retrain when they lose the modem on
- >the other side. The other end will cut off the connection and the
- >WB's CD light starts blinking like it is retraining. How can I stop
- >this from happening? I wan't the damn thing to hang up and not wait
- >10 seconds while it figures out the line has been dropped. I've seen
- >no other Telebits do this and it is aggravating to have this one do
- >it.
-
- I've asked about this re the T3000 but nobody has replied. It just
- sits there with the CD light blinking before finally figuring out
- that that link as gone bye-bye. Naturally anybody calling has to
- wait until it hangs up and the modem recycles....
-
- >I've often wondered what undocumented registers the Telebits have in
- >them to improve performance and how they work. Does anyone have such
- >a listing or know how I can get it?
-
- I don't have a WB myself but people have said that the undocmented
- registers are the same as for the T2500. Depending on your situation
- changing them can make no difference at all, or double the throughput:
- I didn't find any difference on local calls, but my throughput to the
- U.S. from Japan went from ~500 CPS -> ~1,000 CPS.
-
- I don't want to have to pay to email the documents to you but I got
- them from Telebit so you might mail them (sorry, forget the address).
-
- Hope that helps, if only a little,
-
- Dave
-
- --
- Dave McLane
- JUNET: davidg@aegis.or.jp (ONLY within Japan: post otherwise)
- Nagaokakyoshi, Kyoto Japan Tel: +81-75-951-1168 Fax: +81-75-957-1087
-
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