TI DSPS 3rd Party Listings: Telecommunication Algorithms: FAX/CNG Tone Detection

Digital Signal Processing Solutions Tools: Telecommunication Algorithms

Product Name:	FAX/CNG Tone Detection
Company Name:	D2 Technologies, Inc.
Features & Benefits:	Detects the presence of FAX calling tone (CNG) Accepts linear or codec data
TMS320 Devices Supported:	C2xx C5x C54x C6x
Data Rate (kbps):	8
Program Memory (k word):	0.8
Data Memory (k word):	139
Processor Loading (MIPS):	0.82
Target Platform:
Hardware Requirements:	The VP Open architecture places minimal constraints on the underlying hardware and can accommodate a wide variety of systems. No specific TMS320 peripheral devices are required.
Word Size:
Clock Rate:
Group Delays:
Technical Support/Training Available:	YES Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports.
Overview:	D2's FAX/CNG Tone Detection algorithm module detects the presence of a calling tone (CNG), the standard connection protocol for automatic connection of a FAX modem, and automatically routes the FAX to the answering party's FAX modem.
Ideal Performance:	Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports.
Algorithm Verification:	D2 tone detection test with a prerecorded tape containing at least ten samples of each of the CNG tones from at least five different FAX machines, D2 tone detection test with CNG signals from the same FAX machine connected to a local CO * D2 tone detection test consisting of CNG tone with various frequency shifts and power levels * D2 tone detection talk-down test * VP Open interface validation
Availability:	C5x, C54x- Available, C2xx, 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.