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How to set fax rate / modem max speed in Stonefax

Article ID: 597
Last updated: 10 May, 2022

Applies to:

Imagicle Digital Fax (any version).


How to set fax rate/max speed (in bps) of modems in Digital Fax service for incoming/outgoing faxes


After logging in the Digital Fax server with local administrative rights, you can use either the script method or the manual method described below.

Using the script

  • Unzip the attached file into any temporary folder.
  • Run the Runme.bat file and follow the instructions.

Manual configuration

  1. On the Digital Fax server, run Registry Editor (regedit)
  2. Go in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\TAPIDevices
  3. For every "Modem" folders change these parameters: 
    - ModemRecvSpeeds (11 is default value = 14400bps)
    - ModemSendSpeeds (11 is default value = 14400bps)Possibly values are:

4. Save and restart Digital Fax service from web interface
To limit the speed at 9600 bps set the value to 3.
​To limit the speed at 4800 bps set the value to 2.
​To limit the speed at 2400 bps set the value to 0.

Article ID: 597
Last updated: 10 May, 2022
Revision: 9
Views: 901
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