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How to set max fax modem rate

Applies to:

Imagicle UCX Suite, any version

Description:

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

How-to:

  1. Access UCX Suite server via RDP

  2. Run Registry Editor (regedit)

  3. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\TAPIDevices

  4. For every "Modem" folders change these parameters

  • ModemRecvSpeeds (11 is default value = 14400bps)

  • ModemSendSpeeds (11 is default value = 14400bps)

image-20250227-075327.png

Save and restart Digital Fax service from web interface.

Possible values are:

  • 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.

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