D/41ESC
Global SCSA 4-Port Voice Processing Board

Features and Benefits

• Four independent voice processing ports in a single PC ISA slot supports low- to medium-density voice systems

• Approved for use in numerous countries throughout North and South America, Europe, and Asia/Pacific

• SCbus connectivity enables applications requiring switching and allows access to additional resources such as fax, text-to-speech, and automatic speech recognition

• Supports Windows NT* and Windows 95*, including TAPI/WAVE*

• 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 between disk storage and voice quality

• Spring Ware downloadable signal and call processing firmware, provides easy feature enhancement and field-proven performance based on over 4 million installed ports

• International Caller ID capability via on-hook audio path. Supports Bellcore CLASS*, UK CLI, and other international protocols.

• DTMF (touch tone) detection provides reliable detection during voice playback-allows callers to "type-ahead" through menus

• Patented outbound call progress analysis monitors outgoing call status quickly and accurately

• Configure multiple boards in a single PC for easy and cost-effective system expansion and to build scalable systems from four to 64 ports

• C language application program interfaces (APIs) for MS-DOS*, UNIX*, OS/2*, Windows NT, and Windows 95 shorten your development cycle so you can get your applications to market faster

• Support for Global Dial Pulse Detection (DPD) pulse-to-tone conversion software

• Supports software-based speech technologies

• Supports PBX Expert, a utility that simplifies switch integration
  

Applications

• Voice messaging/auto attendant
• Interactive voice response
• Audiotex
• Inbound and outbound telemarketing
• Operator services
• Dictation
• Auto dialers
• Notification systems
• Telecomputing servers
• On-line data entry/query

The D/41ESC voice processing board brings DSP-based call technology to the global marketplace. The interface circuitry of the D/41ESC is approvable for connection to analog networks in over 30 countries. (See your sales engineer for a list of the latest approvals.)

The D/41ESC provides four telephone line interface circuits for direct connection to analog loop start lines. A dual-processor architecture, comprising a DSP (digital signal processor) and a general purpose microprocessor, handles all telephony signaling and performs DTMF (touch tone) and audio/voice signal processing tasks. This architecture allows the board to run Spring Ware call processing firmware features, including selectable rate, high-quality voice coding with speed control, outstanding DTMF detection with cut-through, and advanced outbound call progress analysis.

Use the D/41ESC board to build sophisticated computer telephony systems to which capabilities such as speech recognition, facsimile, and text-to-speech can be added. The D/41ESC shares a common hardware and firmware architecture with other Intel® Dialogic® SCbus, PEB, and AEB-based 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.