TIP: Click on subject to list as thread! ANSI
echo: hayes_modems
to: JIM PALMER
from: RICHARD TOWN
date: 1996-09-06 17:36:00
subject: Re: FACTORS AFFECTING THR

 -=> Quoting Jim Palmer to Richard Town <=-
 RT> Are you really saying that this file (let's keep to the same standard)
 RT> will achieve a faster apparent effective thruput just because your
 RT> serial port/modem can work at 230k4?
 JP> Not if it is uncompressable, (already ZIPped) even a 38.4 kbps port
 JP> can keep  up.  If it were plain text, (even screens) yes.
Was referring to 1X30.TST  Hopefully, this will be clear on the box.
Wouldn't want newbies thinking they had bought a 230k4 modem then
shouting "swiz" when they only get 3,400-3,500 cps on fully compressed
files' transfer max
 RT> Do you have any log extracts showing this file being transmitted any
 RT> serially faster via POTS?
 JP> Gosh no, my Mac software just makes dialog boxes, sorry.  However
 JP> your  chart can show the effect of a slow UART.
OK, well that's what I'm after.  For ZyXel, Hayes and (one other forget
name) to claim faster thruputs, they should use this file as the standard
And make available some log extracts showing this via POTS, since these
are domestic modems with publically-made claims of this capability
 JP> Let's do the math:
Thanx for that
 JP> Finally, if our version of V.42bis allows 8:1 compression
Aha!
 JP> also gets the wonderful chance to see how much thought your phone
 JP> company has  put into line quality.
On trunks regularly get >3.7kHz over here but that's unpredictable and
varies with load (strange that :)
 JP> RPI  modems are suitable as doorstops.  Your smilage may vary.)
Am awaiting my ComStar (with the _next_ ROM :) which does both at V34Plus
rgdZ
Richard
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