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Dual Tone Multi-Frequency (DTMF) Software for Telephone Systems
Dual Tone Multi-Frequency (DTMF) Software for Telephone Systems
This Dual Tone Multi-Frequency (DTMF) Software is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.
Toronto,
Ontario,
India
(prbd.net)
12/03/2012
Toronto, Canada – GAO Research Inc. (www.GAOResearch.com)is offering its dual tone multi-frequency (DTMF) software for telephone systems. DTMF is an international signalling standard for touch-tone telephones.It is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone.
GAO's Dual Tone Multi-Frequency (DTMF) Software is implemented in assembly and C and features low data and program memory requirements. Itis an implementation of a Dual-Tone Multi-Frequency (DTMF) generator and decoder. GAO DTMF generator and decoder consist of four user-callable functions that perform the generating, decoding, and initialization operations. The DTMF generator generates standard telephone digits as the sum of sinusoids corresponding to a frequency table for each digit. The DTMF decoder will take a digital signal as input and produce the decoded digit.The DTMF software generates and decodes 8 kHz PCM samples. It is fully compliant to EIA / TIA - 464B 6.1.4 and 6.1.5 .1 to 6.1.5.5 standards.
This dual tone multi-frequency (DTMF) software belongs to GAO’s family ofTelephony Software. This line includes a wide variety of telephony modules such as Call Progress (CP) software which provides full call progress tone detection and generation functionality and operates on PCM samples, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones,multi-channel computer telephony boards, soft PBXs and Voice over IP.
About GAO Research Inc.
GAO Research Inc. (www.GAOResearch.com) is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.
About
GAO Tek is a result of the strong engineering talent and capabilities within GAO Group. It started operating in 2001 as GAO Engineering to supply development tools to engineers and developers in the embedded field. The business grew rapidly thanks to the quality and the high value to price ratio of its products. Over time, its product offerings expanded to cover telecom products, test and measurement instruments, IT products and a strong line of highly popular RFID products. In 2006, GAO Enginee
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