# Configuration for 3CX PBX Server with the ProSBC to receive T38 Faxes
### Introduction
This document provides instructions on how to configure 3CX PBX Server with the ProSBC to receive T38 Faxes. Please visit the following link for more details about [Configuring Fax Server in 3CX PBX Server](https://www.3cx.com/docs/manual/fax-server/)
### 3CX PBX Fax Server Configuration
3CX Phone System includes a pre-configured fax extension (ext: 8888). This extension is used by the 3CX Fax Server for incoming fax calls, which will then be routed to an email address.
* In the 3CX Management Console, go to Settings > FAX Server.
* Enter an email address to forward the faxes received on this number.
* Select the fax extension that should receive incoming faxes. You can use the default built-in ‘8888’ extension.
* Assign one or more available DIDs to the fax server.
* Click OK to save.
### ProSBC T38 Configuration
To enable T.38:
1\. Select Profiles from the navigation menu.
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2\. Click Create New Profile
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3\. Enter a name for the Fax Profile.
* Click Fax/Modem Relay to expand the view.
4\. Configure the settings:
* Set Enable Fax/Modem Relay to enabled.
* Set Detection Mode to Standard.
* Set Relay Mode to T.38.
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5\. Verify that the Profile was successfully created message is displayed.
