1-12-94                    Setup V-Series Modems

     The  proper setup for all Zoom V-series modems... Use AT&F&C1&D2  (&D0
for  Mac) for the init string.(for the White V42bis [2400] or Turbo modems
add  S36=7 to the string) OR pick the Hayes 2400 from  software  selection.
Set RTS/CTS =ON, Speed to 38,400 or 57,600 (9600+ models) or 9600  (2400
v42bis models), do not follow modem connect/autobaud detect=OFF/NO. If your
software has the option to 'drop DTR to hang-up' set that to YES. When  you
enter any AT command, that sets the port/modem speed, bits & parity. If you
do AT&W all current settings are saved, including speed, bits, parity & the
modem  will 'awaken' with those settings. >>> Do NOT turn ON  any  Software
protocols  (V42bis/Mnp), as the modem has them in hardware.  <<<.   If  you
want  to  see  true  modem-modem connect  speed  rather  than  the  default
computer-modem speed, put S95=1 in the string. S95=0 is default.

     Any program that uses ATZ in the intitialization or command string, is
expecting  that  it  is the only software that you will  be  using  on  the
computer  with that modem. As that is extremely unlikely, we disapprove  of
that  practice. Replace the ATZ with (99% of the time) AT&F&C1&D2.  Put  in
whatever  they use for a carraige return (if they show one). If  there  are
additional  parameters put them between the above string and  the  carraige
return character(s). (Most often the ^M is used for carraige return.)

    Some commands for some Hayes hi-speed modems are proprietary (not CCITT
v32bis)  so picking a Hayes hi-speed modem is not the right choice. IF  you
must pick a modem, pick a Hayes Smartmodem 2400.

     >>>   I always recommend you start any string AT&F in all programs  to
make sure it's set back to factory, eliminating any conflicting setup  from
another program.

     Some  (usually  old) serial cables are fine for old 2400  modems,  but
don't  have enough pins connected for a modern 'V' modem. (pins 2-8, &  20)
The cable must support hardware flow control.

     Some  Fax  software (Winfax for example) does not reset the  modem  to
Data mode when done. AT+FCLASS=0 will reset to data mode.

     NEVER  set  over 19,200 in Windows, unless you have an  alternate  com
driver like TURBOCOM.DRV

                                   Don Hinds - Zoom Tech
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