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From: tech@mich-ns.Michigan.COM (Mich. Network Sys. TECH SUPPORT)
Newsgroups: comp.dcom.modems
Subject: Re: V.32 vs. Telebit: Which should I buy?
Message-ID: <48@mich-ns.Michigan.COM>
Date: 22 May 91 18:17:53 GMT
References: <45@mich-ns.Michigan.COM> <1991May18.144219.536@nstar.rn.com> <490@frcs.UUCP>
Organization: Michigan Network Systems, Detroit, MI
Lines: 29

In article <490@frcs.UUCP> paul@frcs.UUCP (Paul Nash) writes:
"Thus spake larry@nstar.rn.com (Larry Snyder):
"> tech@mich-ns.Michigan.COM (Mich. Network Sys. TECH SUPPORT) writes:
"> >T1000 in PEP mode: MAX=960cps, AVG=850cps
"> >T2500 in PEP mode: MAX=1920cps, AVG=1150cps
"> >V.32: I have no stats for these.
"> v.32 - 1100 cps
"> v.32bis - 1750 cps
"
"A lot depends on the quality of your phone lines.  On local (< 100 km)
"calls, I get ~ 1000 cps with PEP and UUCP spoofing.  On trans-Atlantic
"calls, I get ~ 300 cps with PEP and UUCP spoofing.  However, the trans-
"Atlantic stuff won't connect in V.32 mode, and barely hold the line
"with v.22bis.  If your lines are not perfect, get the Trailblazer.
"
"
Thats whats nice about PEP. With V.32, if the line gets noisy, its drops
back to half its normal speed (usually 4800bps). If the line gets even
worse, it will drop the connection altogether. Even if the connection 
doesn't drop, V.32 cannot re-train back up to a higher speed. 

PEP can drop backwards in increments of as little as 100 baud AND can 
speed up again, if line conditions get better. 

-- 
Michigan Network Systems                         Technical Support Division
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