Features and Benefits

• Four independent voice and fax processing ports in a single PCI slot
• Supports low- to medium-density enterprise Unified Messaging, integrated voice and fax mail, and single call fax-on-demand applications
• SCSA™ SCbus™ connectivity enables applications requiring switching and allows access to additional hardware resources
• H.100 connector allows for easy future expansion to the new industry standard CT Bus™
• Plug and Play ready. Hardware installation is simplified by eliminating DIP switches and jumper settings and enabling software-controlled configuration.
• Configure multiple boards in a single chassis, PCI bus or mixed PCI/ISA bus, for easy and cost-effective system expansion of up to 64 analog ports
• Dialogic SpringWare™, downloadable signal and call processing firmware, provides easy feature enhancement and field proven performance based on over three million installed ports
• PerfectDigit™ DTMF (touchtone) provides reliable detection during voice playback—allows callers to "type-ahead" through menus
• A-law or µ-law voice coding at dynamically selectable data rates, 24 Kb/s to 64 Kb/s, selectable on a channel-by-channel basis for optimal tradeoff in disk storage and voice quality
• International Caller ID capability via on-hook audio path. Supports Bellcore CLASS™, UK CLI, and other international protocols.
• Patented outbound call progress analysis monitors outgoing call status quickly and accurately
• 14,400 b/s (v.17) fax with ITU-T Group 3 and ETSI NET/30 compliance ensure operation with fax machines worldwide. Provides seamless voice + fax integration at hardware and software levels. Supports full compliance of ITU-T (T.4, T.6, T.30) recommendations.
• ASCII-to-fax conversion on the fly allows direct transmission of text files and frees host computer for other processing
• Page header information is generated automatically
• Scan line error correction detects, reports, and repairs faulty scan lines for improved image quality
• Dynamic page-width conversion preserves aspect ratio resulting in undistorted images. Sends and receives varying page sizes according to capabilities of remote machine.
• Phase B, Phase D return allows real-time application control at beginning and end of fax process
• Operator intervention provides switching between voice and fax during same call enabling integrated voice/fax mailbox applications and a proprietary communication channel to allow confidential transmissions
• Page concatenation on the fly allows sending of multiple images in one fax
• Text and graphics can be combined on same page permitting mixing of coding methods
• Support for TIFF/F, MH, and MMR data formats compresses fax data
• Multiple polling modes can automatically collect documents from remote devices. After transmission of a document, turnaround polling allows the calling unit to poll (to receive a fax) the remote fax unit during the same call.
• Fine resolution supported for improved image quality
• Fill minimization results in faster transmission and more compact file storage; no unnecessary fill bits are sent or stored
• Fully integrated voice/fax API enables easy incorporation of fax capability into existing voice applications
• C-language application program interface (API) for Windows NT® shortens your development cycle so you can get your applications to market faster
• Supports PBXpert32™, a free utility that simplifies switch integration
• Optional, on-board Global Dial Pulse Detection™ (DPD™) feature enables callers without touchtone phones to access applications. No additional pulse-to-tone conversion equipment needed.
• Windows TAPI/WAVE support (including 11 kHz, 8-bit file format)

• Unified messaging
• Fax mail
• Integrated voice mail and fax mail
• Integrated voice/fax response
• Single call fax-on-demand
• Remote database transactions

• International caller ID (CLASS™, CLIP, ACLIP)
• Global Dial Pulse Detection (DPD)
• Speech recognition
• Text-to-speech 
• WAVE file support at 11 kHz linear PCM

 The VFX/PCI combines the best voice processing and fax technology in the call processing industry: the reliable, field-proven SpringWare™ voice processing capability and fax modems from Rockwell International.

 Fax functions are seamlessly incorporated into Dialogic standard voice drivers. Complete voice and fax integration at the hardware level via a shared DSP provides efficient on-demand voice and fax image processing. Consistent voice and fax commands ensure portability between operating systems.

 The VFX/PCI board incorporates an H.100 interface for compatibility with next generation CT Bus™ products, and at the same time is backwardly compatible with existing SCSA products through the use of an optional CT Bus/SCbus adapter.

 The VFX/PCI is built on the proven dual-processor architecture pioneered by Dialogic. This configuration combines a Motorola digital signal processor (DSP) with an Intel-compatible control processor to provide balanced processing capacity and a robust software architecture to enable advanced signal computing. The architecture allows the product to run Dialogic downloadable signal and call processing firmware, SpringWare™, which provides an advanced set of call processing features, including selectable rate, high-quality voice coding with speed control, outstanding DTMF detection with cut through, and advanced outbound call progress analysis.
 

Configurations

 Use the VFX/PCI board to build sophisticated, computer telephony systems to which capabilities such as speech recognition, facsimile, and text-to-speech can be added. The VFX/PCI shares a common hardware and firmware architecture with the other Dialogic SCbus boards for maximum flexibility and scalability. Features can be added and systems can grow while protecting investment in hardware and application code. With only minimum modifications, applications can be easily ported to lower or higher line-density platforms.
 

The VFX/PCI installs in any PCI-based personal computer or server (PCI bus or mixed PCI/ISA) and compatible computers (Intel 80386, 80486, or Pentium™-based PC platforms). The VFX/PCI provides everything required for building integrated voice and fax solutions scalable from 4 ports to 64 ports. The maximum number of lines that can be supported is dependent on the application, the amount of disk I/O required, and the host computer CPU and power supply.

 Applications developed to run on the Dialogic VFX/40ESC plus™ product will run on a similar VFX/PCI configuration.
 

The VFX/PCI board can operate within a mixed chassis containing Dialogic PCI and ISA products. The VFX/PCI's forward-looking design incorporates the new H.100 connector to simplify connection to next generation CT Bus products. The VFX/PCI can also connect to existing SCbus products through the use of an optional CT Bus/SCbus adapter. The adapter provides both SCbus and H.100 physical connectors required to link the VFX/PCI to current SCbus products.

 Software Support

 The Dialogic System Software and Software Development Kit for Windows NT® (Native) currently supports the VFX/PCI. This package contains a set of tools for developing complex multi-channel applications. In addition, the package also contains a Dialogic Fax Development Package that supports all VFX series fax products. Applications developed on one platform can be easily ported to the other. In addition, the fax interface is designed to work consistently with Dialogic standard voice and call processing interfaces. A C language-based library/ application programming interface (API) lets you develop a wide variety of applications. You can use the same commands to dial and receive voice and fax calls. The application can then play or record voices files, or send or receive fax files in the same session, providing the utmost application flexibility. An API with logical addressing resource management eliminates the need to keep track of physical resource addresses such as time slots and board numbers.

 Functional Description

 The VFX/PCI board combines four-line voice processing with 14,400 b/s (v.17) facsimile that can perform all standard functions of a fax machine and more, including sending and receiving multiple documents, polling, broadcasting, and turnaround polling. VFX/PCI uses a unique dual-processor architecture that combines the signal processing capabilities of a DSP with the decision-making and data movement functionality of a general-purpose control microprocessor. The VFX/PCI provides call processing for either analog loop start telephony signals from the telephone network or resource sharing for digital signaling and digital voice information input via the SCbus. This architecture handles real-time events, manages data flow to the host PC for faster system response time, reduces host PC processing demands, filters DTMF and telephony signaling, and frees the DSP to perform signal processing on the incoming call.

 A telephone line interface on the baseboard receives analog voice and telephony signaling information from the telephone network (see block diagram). This telephone line interface uses reliable, solid state hook switches (no mechanical contacts) and FCC part 68 class B ring detection circuitry. This FCC-approved ring detector is less susceptible to spurious rings created by random voltage fluctuations on the network. Each interface incorporates circuitry that protects against high-voltage spikes and adverse network conditions and allows applications to go off hook any time during ring cadence without damaging the board. Ring and on-hook/off-hook information and voice signals are conditioned by the telephone line interface and applied to a signal processor called a CODEC.

 The CODEC samples and digitizes the audio signal and sends a digitized audio signal via a digital audio bus (TDM) to a Motorola DSP for processing. When the Motorola DSP identifies the call as a fax call, this information is communicated to the control processor which switches the voice channel into fax mode and activates the corresponding fax channel.

 When a fax call is received, it is connected via an internal analog audio bus to a fax channel duplexer. The duplexer enables the fax modem to alternately transmit and receive analog audio (modem) signals via the internal analog audio bus to the telephone line interface or SCbus.

 For call processing, the DSP processes the digitized voice data based on SpringWare firmware loaded in code/data RAM. The DSP performs the following signal analysis and operations on the incoming data:
 

• automatic gain control to compensate for variations in the level of the incoming audio signal
• applies an ADPCM (Adaptive Differential Pulse Code Modulation) or PCM (Pulse Code Modulation) algorithm to compress the digitized voice and save disk storage space
• detects the presence of tones—DTMF, MF, or an application-defined single or dual tone
• silence detection to determine whether the line is quiet and the caller is not responding For outbound data, the DSP performs the following operations:
• expands stored, compressed audio data for playback
• adjusts the volume and rate of speed of playback upon application request
• generates tones—DTMF, MF, or any application-defined general-purpose tone The dual processor combination also performs outbound dialing and call progress monitoring
• transmits an off-hook signal to the telephone network
• dials out (makes an outbound call)
• monitors and reports results—line busy or congested; operator intercept; ring, no answer; or if the call is answered, whether answered by a person, an answering machine, a facsimile, or a modem.

 Ring and on-hook/off-hook signaling data is passed to the on-board control microprocessor and transmitted to the application via a dual-port shared RAM and the host PC ISA bus.

 When the SCbus is selected, digital voice and signaling information from a network board or other resource enter the VFX/PCI via the SCbus interface. The SC2000 chip manages these signals and acts as the traffic coordinator to store (buffer) the high-speed digital data from the bus until the data for each channel can be transmitted to the DSP.

 The SC2000 chip transmits several lower-speed data streams over a single high-speed channel in the SCbus. This chip also incorporates matrix switching capabilities. Under control of the on-board control processor, the SC2000 chip can connect any call being processed or any fax channel to any of the four analog lines or to any time slot (1024 for SCbus). This enables the application to switch calls to or from other resources (such as call processing, speech recognition or TTS) as they are needed, or to reroute calls.

 The SC2000 chip can bundle time slots to carry high-bandwidth data and can broadcast to multiple resources over the SCbus.

 In SCSA configuration, the external SCbus can be programmed to operate at 2.048 or 4.096 Mb/s while the local bus operates at 2.048 Mb/s.

 The on-board control processors control all operations of the VFX/PCI board via a local bus and interpret and execute commands from the host PC. These processors handle real-time events, manage data flow to the host PC to provide faster system response time, reduce PC host processing demands, process DTMF and telephony signaling before passing them to the application, and free the DSP to perform signal processing.

 Communications between a processor and the host PC is via the Shared RAM that acts as an input/output buffer and thus increases the efficiency of disk file transfers. This RAM interfaces to the host PC via the PCI bus. All operations are interrupt-driven to meet the demands of real-time systems. When the system is initialized, SpringWare firmware is downloaded from the host PC to the on-board code/data RAM and DSP RAM to control all board operations. This downloadable firmware gives the board all of its intelligence and enables easy feature enhancement and upgrades.

 With the rotary switch on the VFX/PCI set to 0, the board is hardware Plug and Play enabled. Configuration is handled exclusively by software. Alternatively, you can set the rotary switch to another value to manually control board location for ease of cabling or backwards compatibility with Dialogic Board Locator Technology™ (BLT) installation.

 Technical Specifications*
 
 

Number of ports	4 channels of call processing and facsimile
Max. boards/system	16
Analog network interface	On-board analog loop start
Resource sharing bus	SCbus or CT Bus
Fax modem	Rockwell R144EFXL
Fax control microprocessor	Intel 80C186 @ 16 MHz
D/41EPCI control microprocessor	Intel 80C186 @ 16 MHz
Call processing
digital signal processor	Motorola DSP56002 @ 49 MHz, with 128 K word private, 0 wait state SRAM
FACSIMILE SPECIFICATIONS:
Fax compatibility	ITU-T G3 compliant (T.4, T.30), ETSI NET/30 and T.6 compliant
Data rate	14,400 b/s (v.17) (max.)
	Variable speed selection
	Automatic step-down to 12,000 b/s, 9600 b/s, 7200 b/s, 4800 b/s, and lower
Transmit Data Modes
	MH (Modified Huffman), MR (Modified Read), and MMR (Modified Modified Read) with or without ECM
Receive Data Modes	MH (Modified Huffman), MR (Modified Read), MMR (Modified Modified Read), all with or without ECM
File data formats	TIFF/F (Tagged Image File Format) for transmit/receive
	MH, ASCII and Katakana text, transmit
ASCII-to-fax conversion	On-board conversion
	Direct transmission of text files
	Multiple fonts supported
	Embedded formatting commands supported
	Page headers generated automatically
Error correction	Detection, reporting, and correction of faulty scan lines
Image widths	215 mm (8.5 in), 255 mm (10.0 in), and 303 mm (11.9 in)
Image scaling	Automatic horizontal and vertical scaling between page sizes
Polling modes	Normal and turnaround
Image resolution	Normal (203 pels/in x 98 lines/in)
	Fine (203 pels/in x 196 lines/in)
Fill minimization	Automatic fill bit insertion and stripping
HOST INTERFACE:
Bus compatibility	PCI. Complies with PCISIG Bus Specification, Rev. 2.1.
Bus speed	33 MHz max
Bus mode	32 bit to 16 bit conversion in target mode
Shared memory	64 Kbyte page
I/O ports	None
TELEPHONE INTERFACE:
Trunk type	Loop start
Impedance	Configurable by parameter†
Loop current range	8 to 100 mA
Ring detection	15 Vrms min, 13 to 68 Hz†
Echo return loss	Configurable by parameter†
Cross talk coupling	Less than –70 dB at 1 kHz channel to channel
Signal/noise ratio	70 dB (referenced to –15 dBm)
Freq. response	300 Hz to 3400 Hz ±3 dB (transmit and receive)
Connector	Four RJ-11 type
POWER REQUIREMENTS:
+5 VDC	2.62 A max.
+12 VDC	200 mA max.
–12 VDC	150 mA max.
Operating temperature	0°C to +50°C
Storage temperature	–20°C to +70°C
Humidity	8% to 80% non-condensing
Form factor	PCI long card, 12.3 in. long. (without edge retainer) or 13.3 in. long (with edge retainer), 0.79 in. wide (total envelope), 3.87 in. high (excluding edge connector)
SAFETY & EMI CERTIFICATIONS:
United States	FCC part 68 ID #: EBZUSA-75385-VM-T;
	FCC Part 15, Class A
	UL: E96804 UL1950
Canada	DOC: 885–5542A
Warranty	3 years standard