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How to set fax rate / modem max speed in Stonefax

Article ID: 597
Last updated: 29 Jul, 2021

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


  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: 29 Jul, 2021
Revision: 8
Views: 529
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