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From: rstory@xopen.co.uk (Robert Story)
Newsgroups: comp.dcom.modems
Subject: Re: Telebit and V.32bis
Message-ID: <1991Jun11.132130.12320@xopen.co.uk>
Date: 11 Jun 91 13:21:30 GMT
References: <1991Jun6.193254.3886@robobar.co.uk>
Organization: X/Open Company Ltd
Lines: 51

From article <1991Jun6.193254.3886@robobar.co.uk>, by ronald@robobar.co.uk (Ronald S H Khoo):
> casey@gauss.llnl.gov (Casey Leedom) writes:
> 
>> / From: larry@nstar.rn.com (Larry Snyder)
>> | 
>> | yes using uucp v.32bis - 1970 cps with 16 bit compressed data PEP -
>> \ 1300-1400 cps and v.32 900-1100 cps..
>> 
>>   Yet more reason to ditch PEP as soon as possible.  It no longer holds
>> the preeminent UUCP throughput position it once did.
> 
> Well, if all your UUCP connections are like Larry's, that seems reasonable.
> But the info required to make global decisions like that isn't complete
> yet.  For example, PEP has always shown unusually good performance on
> poor and international phone lines.  A modem vendor or two have posted
> here that their V.32 performance on such lines is fine.  There has
> also been anecdotal evidence from users that V.32 stinks where PEP
> worked fine(ish).
> 
> It really be nice to have some independently confirmed DATA on exactly
> what kind of performance PEP, V.32 and V.32bis gets over a wide range of
> different phone connections.  There also seems to be a "quality of
> implementation" issue where using different V.32 implementations
> would further complicate the issue.
> 
I agree.  Last year at ths time I was testing USR and TB modems.  The USR's
just could not handle the noisy lines our company encountered.  In fact at
one point I tried the test suggested in this news conference.  That is
pick up an attached handset while the modem is in mid-transfer and say
"Polly want a cracker?".  The USR gave up whereas the TB regained its
compusure and continued.  Also USR's HST stinks with UUCP and their V.32
was also line sensitive.  On the plus side they did give us great support
during all of this including flying 2 people to one of the problem test 
sites.  Of course the final deal was for 275 modems so I can't say as I
blame them.  :-)


Regards,
	Robert.
--
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Robert Story                                          X/Open Company Limited
UUCP : ...uunet!{mcsun!ukc,utai}!xopen!rstory       Apex Plaza, Forbury Road
EMail: r.story@xopen.co.uk                         Reading, England, RG1 1AX
Voice: +(44) (0)734 508311                          FAX: +(44) (0)734 500110 
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-- 

Regards,
	Robert.
--
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Robert Story                                          X/Open Company Limited
UUCP : ...uunet!{mcsun!ukc,utai}!xopen!rstory       Apex Plaza, Forbury Road
EMail: r.story@xopen.co.uk                         Reading, England, RG1 1AX