TECHNICAL BULLETIN #73 - Rev 1.01 (5/13/96)

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TITLE   : Fax and Data Port Sharing
PRODUCT : PROCOMM PLUS for Windows, All versions
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This document provides background information on how PROCOMM PLUS for Windows
2.x coordinates access to the communication port for both fax and data
transmissions, and how this access is affected by some of the settings in
PROCOMM PLUS.

HOW DO THE FAX AND DATA FUNCTIONS SHARE THE PORT?
PROCOMM PLUS for Windows 2.x manages access to the communication port for both
fax and data reception by allowing two separate program modules to
simultaneously monitor the communication port.  Either PW2.EXE, which handles
data, or FAXSTAT.EXE, which handles faxes, will take over port access
depending on whether you are sending or receiving computer-to-computer data,
such as text or files, or whether you are sending or receiving faxes. 

FAXSTAT.EXE will have access to the communication port

 *  when sending a Fax from PROCOMM PLUS.

 *  when sending a fax from another application through the fax printer driver
    installed by PROCOMM PLUS.

 *  when a previously scheduled fax is waiting for transmission in the fax send
    queue.

 *  when you are set to Fax in the Auto Answer options.

 *  when you are set to Fax and Data in the Auto-Answer options (only available
    if your fax modem supports Adaptive Answer).

 *  when you are set to Distinctive Ring in the Auto-Answer options (only
    available if your fax modem supports Distinctive Ring).

 *  if you run a script that causes a fax to be sent or that changes a setting
    affecting faxes.

 *  if Fax, Fax and Data, or Distinctive Ring Auto Answer options are set as the
    default when you start PROCOMM PLUS (i.e. they were in effect the last time
    you exited PROCOMM PLUS).

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