Using Fax Voip T.38 Modem with Windows Fax Service

Windows Fax Service and Windows Fax and Scan application is an integrated fax software included in all Windows versions. It is an extensible fax platform that you can use to deploy shared fax resources in your organization. Users within an organization can install a connection to a remote fax printer on a network fax server and send and receive faxes using shared fax devices located on the server, as well as from a local fax device attached to their computers. Fax administrators can configure, manage, and monitor these shared fax resources. Centralized management of server-based shared fax devices means easier management and maintenance, and lower costs. Fax users can send and receive faxes without the need to use manual fax machines, saving time and effort.

Fax Voip T.38 Modem always trying to automatically install the Windows Fax Service on your computer during the installation process if not installed. To manually install Windows Fax Service on your computer, see To install the Windows Fax Service.

Windows Fax Service can operate with Fax Voip Virtual COM Ports via Fax Voip 14.4K TAPI Voice-Fax Modem driver. Compared with the standard modem driver, the Fax Voip 14.4K TAPI Voice-Fax Modem driver provides support for Caller ID. You should not add modems using Phone and Modems option in the Windows Control Panel. To install Virtual COM Ports and associated modems open Fax Voip T.38 Modem Control Panel, select Ports and Modems, then click <Add/Remove> button, see To Add/Remove Fax Voip Virtual COM ports. To install or reinstall modems without reinstalling Virtual COM Ports, use <Modems> button, see also To Add/Remove Fax Voip Modems.

At the time of installation, Fax Voip T.38 Modem always trying to automatically configure the Windows Fax Service to use Fax Voip 14.4K TAPI Voice-Fax Modem devices to send and receive faxes. To manually configure Windows Fax Service, see To configure the Windows Fax Service.

At the time of installation, Fax Voip T.38 Modem configures the Windows Fax Service to use 'Fax Voip T.38 Modem' as Fax Station ID for all Fax Voip 14.4K TAPI Voice-Fax Modem devices. To manually configure Fax Station ID and Fax Headline, see To configure Fax Station ID and Fax Headline.

Fax Voip T.38 Modem Routing Extension (responsible for Incoming Routing Methods (Microsoft Fax): E-mail, Store in Folder, Print, Custom) should be registered with Windows Fax Service. To register Fax Voip T.38 Modem Routing Extension, restore fax service components, and also easily configure the Windows Fax Service to send/receive faxes via Fax Voip modems in one click, see Configure Fax Service using Fax Voip T.38 Modem Control Panel.

To send a fax, using fax printer and Windows Fax and Scan software, see Sending Faxes.

To receive faxes, using Windows Fax and Scan software, see Receiving faxes.

To learn more about how to monitor the progress of incoming and outgoing faxes, see Monitoring and notifying.

With Fax Voip Virtual COM Ports (modems) and Windows Fax Service you also can use Mail to Fax - Microsoft Fax functionality and Outgoing Fax Routing Methods - Microsoft Fax: E-mail Delivery Receipts, Store in a Folder, Print, Custom Routing.

To configure fax server (Windows Server OS) to be shared with client computers, see Sharing Fax Resources.

To view and manage faxes created by another user, see To access faxes created by another user.

If you have problems, see Windows Fax Service Troubleshooting.

Notes

• The maximum allowed number of fax devices that can be used with Windows Fax Service depends on the operating system. On Windows 11, Windows 10, Windows 8/8.1 and Windows 7 the fax device limit is one. On Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012/2012R2, Windows Server 2008R2, Enterprise or Datacenter Edition, there is no fax device limit. On other versions of Windows 2008R2, the fax device limit is usually four.
• When using Microsoft Fax and Windows Fax and Scan, we currently recommend you to use other solution, Fax Voip Windows Fax Service Provider (Fax Voip FSP). Fax Voip FSP replaces the standard Microsoft Modem Device Provider by the Fax Voip T.38/G.711FAX Device Provider. This allows you to use the Windows Fax Service most efficiently. In particular, the ECM (Error Correction Mode) is supported. The busy signal is also detected correct way. Fax Voip FSP implements Fax Voip FSP Routing Extension that is integrated into the Windows Fax Service. Fax Voip FSP stores the Called Number (DID) in the Routing Information field, which is available in particular in the Windows Fax and Scan software, in the incoming fax properties (no workarounds are used). Outgoing Fax Routing Methods implemented in Fax Voip FSP work regardless of the user account under which the fax job was created. Using Fax Service Provider (FSP) instead of Virtual COM Ports and modems significantly improves reliability of your fax system.