Fax Software Reference for Windows Product Support

2.2. Product Support

The following Dialogic products support the Dialogic fax software:

Product

Description

VFX

VFX refers to Dialogic's integrated four-channel voice/fax boards. Each channel can process voice or fax. Through an SCbus or CT Bus interface, fax resources can be shared by other voice processing resources.

VFX/40SC

Four-port, DSP-based SpringWare voice/fax board with on-board analog telephone interface and Scbus connectivity.

VFX/40ESC

Four-port, DSP-based SpringWare voice/fax board with on-board analog telephone interface and SCbus connectivity. Enhancements over the VFX/40SC include faster fax transmission rates and more advanced compression schemes.

VFX/40ESCplus

VFX/40ESC with additional DSP RAM for expanded voice processing capability including international caller ID, Global Dial Pulse Detection (DPDTM), speech recognition, text-to-speech, and WAVE file support.

VFX/41JCT-LS

Enhanced VFX/40ESCplus. It is a four-port, voice/fax board with on-board analog telephone interfaces (loop start) and CT Bus connector.

DSP-Based Group 3 Fax (DSP Fax)

Also known as Softfax. Multiple-port, software-based fax solution. This software allows you to use the fax API to develop fax applications on non-VFX boards.

Fax modem capability is implemented in software rather than hardware. Fax imaging capability is provided through host software running in conjunction with supported boards.
There are two types of DSP Fax: basic and enhanced. See Table 1. Key Fax Features and Specifications for a list of features. Support for enhanced DSP Fax is available on the VFX/41JCT-LS board only. See the latest Release Guide for the most current list of products that support basic and enhanced DSP Fax.
On some products, DSP Fax resources are in a 1:1 ratio with voice resources, such as on the BRI/2VFD. However, an application may need only a limited number of DSP Fax resources in relation to voice channels. This configuration is provided by products, such as the D/82JCT-U, that offer DSP Fax resources which may be shared among the voice channels. The DSP Fax resource is automatically assigned to a channel through the fx_open( ) function and de-assigned (or made available) with the fx_close( ) function. See the Voice Software Reference (Voice Programmer's Guide and Voice Features Guide) for more information on resource sharing, such as the dx_GetRscStatus( ) function, which allows you to check whether a resource is assigned to a channel.
Check the Release Guide and Release Update for any hardware-specific limitations on resource sharing. See the "Master Feature List" section in the Release Guide for information on the boards and channels that support DSP Fax.

For the most up-to-date list of products that support Dialogic fax software, see the latest Release Guide and Release Update that accompany the software.

For a list of key features supported by each product, see Section 2.4. Key Product Features.

Click here to contact Dialogic Customer Engineering

Product	Description
VFX	VFX refers to Dialogic's integrated four-channel voice/fax boards. Each channel can process voice or fax. Through an SCbus or CT Bus interface, fax resources can be shared by other voice processing resources.
VFX/40SC	Four-port, DSP-based SpringWare voice/fax board with on-board analog telephone interface and Scbus connectivity.
VFX/40ESC	Four-port, DSP-based SpringWare voice/fax board with on-board analog telephone interface and SCbus connectivity. Enhancements over the VFX/40SC include faster fax transmission rates and more advanced compression schemes.
VFX/40ESCplus	VFX/40ESC with additional DSP RAM for expanded voice processing capability including international caller ID, Global Dial Pulse Detection (DPDTM), speech recognition, text-to-speech, and WAVE file support.
VFX/41JCT-LS	Enhanced VFX/40ESCplus. It is a four-port, voice/fax board with on-board analog telephone interfaces (loop start) and CT Bus connector.
DSP-Based Group 3 Fax (DSP Fax)	Also known as Softfax. Multiple-port, software-based fax solution. This software allows you to use the fax API to develop fax applications on non-VFX boards. Fax modem capability is implemented in software rather than hardware. Fax imaging capability is provided through host software running in conjunction with supported boards. There are two types of DSP Fax: basic and enhanced. See Table 1. Key Fax Features and Specifications for a list of features. Support for enhanced DSP Fax is available on the VFX/41JCT-LS board only. See the latest Release Guide for the most current list of products that support basic and enhanced DSP Fax. On some products, DSP Fax resources are in a 1:1 ratio with voice resources, such as on the BRI/2VFD. However, an application may need only a limited number of DSP Fax resources in relation to voice channels. This configuration is provided by products, such as the D/82JCT-U, that offer DSP Fax resources which may be shared among the voice channels. The DSP Fax resource is automatically assigned to a channel through the fx_open( ) function and de-assigned (or made available) with the fx_close( ) function. See the Voice Software Reference (Voice Programmer's Guide and Voice Features Guide) for more information on resource sharing, such as the dx_GetRscStatus( ) function, which allows you to check whether a resource is assigned to a channel. Check the Release Guide and Release Update for any hardware-specific limitations on resource sharing. See the "Master Feature List" section in the Release Guide for information on the boards and channels that support DSP Fax.