Digital Signal Processing Solutions Tools: Telecommunication Algorithms

Product Name: Analog Display Services Interface
Company Name: D2 Technologies, Inc.
Features & Benefits:
  • Detects presence of CAS tone
  • Generates DTMF signal for ACK, dialing
  • Detects and decodes 1200 baud FSK modem data
  • Detects North American call-progress tones
  • Generates Bell 202 FSK signal
TMS320 Devices Supported: C2xx C5x C54x C6x
Data Rate (kbps): 8
Program Memory (k word): 3.5
Data Memory (k word): 277
Processor Loading (MIPS): 3
Target Platform:
Hardware Requirements: None.
Word Size:
Clock Rate:
Group Delays:
Technical Support/Training Available: YES
90 day warranty period plus optional design consultation, algorithm development, system integration and training services available.
Overview: D2's ADSI algorithm module implements all of the physical layer signal processing functions for North American ADSI applications according to the Bellcore type 1, type 2, and type 3 voice and data transmission interface requirements. It detects the CPE Alert signal (CAS) tone, sends and receives the Bell 202 FSK modem data for on-hook and off-hook transmission, generates DTMF as the acknowledgment (ACK) or dialing signal, and detects call progress tone signals.
Ideal Performance: Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports.
Algorithm Verification: Meets Bellcore requirements for FSK tolerance on-hook and off-hook transmission; D2's CAS tone; and D2's Call Progress tone detection. DTMF tone quality for ACK and dialing FSK signal quality, VP Open interface validation.
Availability: C17, C5x Available, C2xx, C54x, C6x-Consult D2
Operating System Used: VP Open specifications
Tools Supported By: TI, White Mountain, DSP Research, Go DSP, National Instruments.
Company Information: D2 Technologies, Inc.
104 West Anapamu Street
Santa Barbara CA 93101 USA
Tel: 805-564-3424
Fax: 805-966-2144
e-mail: sales@d2tech.com
www: http://www.d2tech.com
Voice processing solutions provider for computer telephony. Over 20 years of industry experience in algorithms, DSP implementation, real-time systems, and telephony system integration.

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