Restart Fax Service at startup

This option is recommended whenever Fax Voip T.38 Modem operates with Microsoft Fax Service*. When Fax Voip T.38 Modem starts, Microsoft Fax reloaded. If you are using Fax Voip T.38 Modem with another fax program, do not use this option. To change this option, administrator privileges are required.

Fax Rate Limits and Error Correction

T.38 fax

Maximum bitrate

(Not implemented yet). The maximum bitrate is set to 14400. Nevertheless, this value can be reduced in settings of your fax program, if the program allows you to customize bitrate.

ECM

(Not implemented yet). Fax Voip T.38 Modem allows to use Error Correction Mode when T.38 fax mode is used. Possibility to use ECM in this case depends only on settings and capabilities of your fax program.

Audio fax over G.711 codec

Maximum bitrate

Select maximum bitrate for audio faxes (G711 fax mode). Maximum bitrate value can be set 14400/9600/4800 which corresponds to rate limits of standard protocols used for facsimile. This value can be reduced in settings of your fax program, if the program allows you to customize bitrate. The Maximum bitrate value can be overridden by the Outgoing Call Routing and Incoming Call Routing settings.

ECM

Check this option if you want to have a possibility to use Error Correction Mode when G711 fax mode is used. Possibility to use ECM also depends on settings and capabilities of your fax program. The ECM value can be overridden by the Outgoing Call Routing and Incoming Call Routing settings.

Notes

• (* : 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.