Receive Faxes through a Dedicated Trunk

Having a dedicated trunk for faxing is the best way to prevent interruptions and other problems that arise from using a shared trunk. This topic describes how to receive faxes on an analog fax machine through a dedicated trunk .


Before you receive faxes by an analog fax machine, perform the following tasks:
  1. Install S2 module or SO module on the PBX.
  2. Connect fax machine to FXS port of the PBX.

    In this topic, we connect fax machine to FXS port located in Span2-Port3.

Step1. Assign an extension to the fax machine

  1. Log in to PBX web portal, go to Extension and Trunk > Extension, click Add.
  2. In the Basic section, select FXS Extension from the Extension Type drop-down list.
  3. In the FXS Port drop-down list, select the FXS port to which the fax machine is connected.

    As the following figure shows, select fax port Span2-Port3.

  4. Click Save and Apply.

Step2. Set up an inbound route for receiving faxes

  1. Go to Call Control > Inbound Route, click Add.
  2. In the Name field, enter an inbound route name to help you identify it.
  3. Set the DID Pattern through which this route pass the incoming call.

    As the following figure shows, set the trunk number as DID pattern.

  4. Select the trunk that supports to receive faxes.
    Note: If you choose a SIP trunk to receive faxes, you need to enable T.38 Support for this trunk.

    As the following figure shows, select a trunk to receive faxes.

  5. In the Default Destination drop-down list, select Extension.
  6. Select the extension that you have assigned to the fax machine.
  7. Click Saveand Apply.


In the example shown above, when a customer sends faxes to trunk 5503301, you can receive the faxes on your analog fax machine.