How AWFAX Initializes a Class 1 or Class 2 Fax Modem

 Last reviewed: December 13, 1994
Article ID: Q114427
The information in this article applies to:
  • Microsoft Windows for Workgroups version 3.11

SUMMARY

The following information describes the process Microsoft At Work PC Fax uses to initialize Class 1 and Class 2 fax modems. This information is useful for troubleshooting initialization problems--the commands below can be sent to the fax modem using Windows Terminal to determine exactly where initialization fails.

MORE INFORMATION

  1. Any command that is specified on the SetupCommand= entry in the EFAXPUMP.INI file is executed.

  2. The following commands are sent to the modem: 

       AT&F   - Resets the modem to factory defaults
   E0     - Turns echo off
   V1     - Causes verbose responses
   Q0     - Puts the modem in quiet mode
   &C1    - Keeps DSR asserted
   &D3    - Tells the modem to reset on DTR
   &D2    - Has same affect as &D3 on modems that do not support &D3
   S0=0   - Turns AutoAnswer off
   S7=255 - Sets the training time-out to 255 seconds
   S8=    - Pause time for commas in Dial string, then either X4
            (recognize busy/dial tone) or X0 (for blind dial)
   \Q1    - XON/XOFF for Microcom and compatible modems
   &K4    - Hayes-compatible XON/XOFF command
   \J0    - Microcom command for do not send DTE/DCE (megahertz modems
            recognize this command also)
   &E5    - Multitech XON/XOFF command
   *F2    - Bidirectional XON/XOFF flow control

  3. The Setup command is run again and issues an AT+FCLASS=1 or AT+FCLASS=2 (depending on the modem class) and either answers the phone or picks it up to dial.

KBCategory: kbusage kbatwork kbtool
KBSubcategory: wfw wfwg awfax
Additional reference words: 3.11 init call efax fax modem

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Last reviewed: December 13, 1994
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