(( On 06-25-1997, Robert Osborne wrote to Cameron Hall: ))
RO>CH>Latest DOS version, v3.51
RO>CH>Latest Windows version (for Windows 3.1 and usable under 95) 1.15d.
RO>CH>Most BBS's can obtain those latest versions for you.
RO>CH>They can also be obtained via the internet at http://www.delta.com
RO>Thank you for the info, I needed it also.  I take it that dos ver 3.51
RO>will run at 14.4?. The 3.21 ver I picked up from the local BBS does not
RO>have this capability? Do you happen to know:?
Robert, from the Telix v3.21 Telix.doc file:
========================================================================
     Telix v3.21                                Questions and Answers
Problem:
     I have a new 14,400 bps modem, but Telix doesn't support 14,400 as a
     speed option.
Solution:
     This is one of the great misconceptions about high speed modems, so
     you're not along in wondering this.  Let me try to detail why it
     doesn't matter, and at the same time give you a bit of an idea what's
     going on behind the scenes when you call another modem...
     The link to get from your computer to the other computer looks much
     like this:
     Telix  Your modem  Their modem  Their computer
         DTE rate        DCE rate         DTE rate
          38,400          14,400           57,600
     As you can see, it is really a series of three links;  one between
     your computer and your modem, one between the two modems, and one
     between their modem and their computer.   What might surprise you is
     that each of these three rates can be, and often are, completely
     different, as above.   So you know, DCE stands for Data Communications
     Equipment (i.e. a modem to modem link) and DTE is Data Terminal
     Equipment (i.e. terminal to modem link). You are not concerned with
     the final link, the remote DTE rate. That is up to the remote site,
     and does not matter at all to you. Once the data leaves your modem,
     and is received by theirs, it is out of your hands.
     Your modem likely has either MNP-5 or v.42bis data compression built
     in.  For transferring non-.ZIP files, these modems can be extremely
     efficient in compressing the data before sending it -- sometimes as
     much as 4 times compression (25% of the original size).
     If the modems can take 1000 characters from Telix, and then turn it
     into perhaps as little as 250 characters with compression, your modem
     still transmits at 14,400 and would need 1000 characters from the comm
     program to transmit a mere 250 characters. In order to keep the DCE
     link flowing with data non-stop, Telix has to send data to your modem
     at 4 times the speed the modem is talking to the other modem (in the
     best case, which almost never happens).  Thus, the DTE (Telix to modem
     rate) must be higher than the DCE (modem to modem rate) by a good
     margin, or the modems will sit idle frequently, waiting for the comm
     program to supply it with enough data.   Since you have no way of
     knowing how much the data will be compressed, or at what speeds the
     two modems will actually connect up at, you should ALWAYS leave the
     DTE rate on your end (the link between Telix and your modem as
     specified in the Telix configuration) locked in, or fixed, at that
     high rate that can accommodate the most efficient case, since that
     most efficient case can occur at any time.
     That's why you're always advised by MODEMCFG.EXE to set the comm
     program's speed, as well as all dialing directory entries (no matter
     how fast the board actually is), to a speed higher than the 9,600 or
     14,400 you really have.    Typically, you'll be told to use 19,200 or
     38,400 (nowadays, typically 38,400, and even some will say 57,600).
     But the important thing is, that speed is constant.   Your DTE
     (program to modem rate) always stays the same, so that when that most
     efficient case comes along, you're ready.
=====================================================================
Telix v3.21 will support your 14400 bps modem just fine.
RO>Is there one version that you can buy that will run on both Dos and
RO>with Windows 3.1?  If so which one?
Telix/DOS, either v3.21 or v3.51 will run just fine in a DOS window
under WIN3.1 as well as (or course) DOS.
Dave
davel@execpc.com
 * SLMR 2.1a * It ain't braggin' if you really done it!
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