Call Progress Software with Two User-callable Functions

Toronto, Canada – GAO Research Inc. (www.GAOResearch.com) is offering its call progress software which consists of two user-callable functions that perform the detection, generation, and initialization operations. It provides full call progress tone detection and generation functionality and operates on PCM samples.

GAO’s Call Progress (CP) software is implemented in assembly and C. It features low data and program memory requirements and can be easily configured to different cadences and tones. Using a tonal signaling standard, it is able to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls. The software module allows for such signals as Dial Tone, Busy Tone, Congestion Signal, Ring Back and Off Hook.

This Call Progress (CP) software belongs to GAO’s family of Telephony 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. This line also includes Dual Tone Multi-Frequency (DTMF) Software which is an international signaling standard for touch-tone telephones, Acoustic Echo Cancellation Software which is an acoustic echo canceller that eliminates one of the biggest problems with hands-free speaker phones: acoustical echoes and Automatic Gain Control (AGC) Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases.

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.