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Article View: comp.sys.ibm.pc.hardware.comm
Article #5

Re: Motorola Power 28.8k modem will not go to 33.6k

#5
From: Bill Garfield
Date: Wed, 02 Aug 1995 19:00
24 lines
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In Article<3vo5hj$7om@news.blkbox.com>, <bjg@bgfax.com> wrote:
[snip]                 
> 26400, if both ends had V.34+, it's possible to get 28800.  So, you
> aren't actually getting 31200 or 33600, but you still get a benefit.
> 
> Anyone care to confirm or deny what I've heard?

This is correct - at least as it applies to USR's implementation of 
V34+.   Apparently the symbol tables are more robust.  Two identical
USR V34 Couriers which were connecting (over a somewhat marginal path)
at 24,000 bps previously, now consistently achieve 26,400 bps. The
only change was the new V34+ firmware was added.

This doesn't mean to imply that V34+  to  V34+ will always yield
an improvement, tho it may and often does.  I have one V34+ Courier
site I call which still connects with me at 26.4 and always has, but 
we know why.... there are a total of 8 d/a conversions in that circuit
path.  Frankly I'm thrilled to get 26.4 through it.



Will other manufacturer's V34+ implementation offer similar speed 
improvement over less than ideal conditions? 
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References: <paris.806362597@dunsel.dev.cdx.mot.com> <Pine.3.05a.9507201249.A30163-c100000@hornet.liunet.edu> <3un3dd$j9v@nntp.crl <3v1ois$5u8@detroit.freenet.org> <3vc2be$oi6@newshost.fiu.edu> <Witting-3107950304150001@dco.cais.com> <3vio6m$1en@newshost.fiu.edu> <3vmfl2$jg_001@primenet.primenet.com> <3vo5hj$7om@news.blkbox.com>

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Newsgroups: comp.sys.ibm.pc.hardware.comm,comp.dcom.modems
Path: arc1-ca.pugleaf.net!news.pel.com!nobody
From: Bill Garfield <bubba@pel.com>
Subject: Re: Motorola Power 28.8k modem will not go to 33.6k 
Message-ID: <NEWTNews.807390545.7840.bubba@bgarfield.pec.pel.com>
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Organization: Panhandle Eastern Corp
Date: Wed, 2 Aug 1995 19:00:12 GMT
References: <paris.806362597@dunsel.dev.cdx.mot.com> <Pine.3.05a.9507201249.A30163-c100000@hornet.liunet.edu> <3un3dd$j9v@nntp.crl <3v1ois$5u8@detroit.freenet.org> <3vc2be$oi6@newshost.fiu.edu> <Witting-3107950304150001@dco.cais.com> <3vio6m$1en@newshost.fiu.edu> <3vmfl2$jg_001@primenet.primenet.com>  <3vo5hj$7om@news.blkbox.com> 
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