LL>  Now i need to know why when i'm doing file transfer in zmodem, i obtain
LL>only 32% of efficiency...
32% as reported by Telix, or the sender's system?
[..a slightly edited section from the Telix 3.22 manual..]
-   Problem:
-Telix seems to be grossly optimistic when estimating the length of time
-it will take to transfer a file.  Its usually about four times slower
-than Telix thinks it will be.  Why is this?
-
-   Solution:
-Previous versions of Telix merely estimated transfers based on the
-speed that Telix dialed at (the DTE), even though this could be up to
-four times greater than the actual connect speed.
-
-Telix 3.22 now makes its best attempt to read the actual connect speed
-(DCE), but needs a little cooperation from the modem.  Telix cannot
-determine the DCE on its own -- it must rely on the modem to report it.
-
[..snip..]
-
-Telix reads the connect rate as the first number to follow the connect
-                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-string on the same line as the connect string. Some modems, however,
-(notably newer v.32bis modems) can be configured to return very
-detailed information like this:
-
-          CARRIER 14400
-          PROTOCOL: LAP-M
-          CONNECT 57600/V32BIS/V42BIS
-                  ^^^^^
-Now, if your connect string was "CONNECT", the value is not the 14400
-you wanted, but the 57600 you didn't want.  In this case, you need to
-find the command in the modem manual that disables extended result
-codes (often the S95 or S44 registers)  and reverts to the simple
-CONNECT 14400/ARQ/V42BIS string as above -- then Telix will get the
-connect string you wanted.
[..end of quote..]
In other words, Telix "thinks" you're blasting along in a Ferrari,
when you're actually driving a rusty Yugo. If I set the dial speed at
57600, it still only connects at the modem's 19200 maximum, but Telix
"sees" the 57600, and calculates using that. When set to dial at 19200,
the estimate is MUCH closer to reality.
LL>I'm a registrated user of the version 1.15d and i'm using it on a
LL>386DX-25 with 4 megs of RAM under windows 3.1.
Windows really NEEDS more than 4 megs to run properly, or it will
be constantly sending bits of the program back and forth to the
swap file on the hard drive, and this will really slow things down.
I've got 16 megs, and with a swap setting of "0" (NO swap file), "Help,
About" says there's 11,796kb free. That's 4.2 megs being used, and I
haven't loaded any programs yet!
Of course, you might just have a really noisy phone line, so the modem
has to re-receive some packets several times before it gets a good copy.
... Fer sail cheep, Windows spel chekker, wurks grate.
 * SLMR 2.1a * 
--- Maximus 3.01
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