A voice command (VC)-to-DTMF interfacing system that allows existing DTMF-driven systems to be interacted with by a caller using voice commands. The VC-to-DTMF interfacing system translates the voice command from a caller into the DTMF codes which are then played through a port for receipt by the DTMF-driven system. In a first mode, the voice commands from the caller and the pre-recorded messages of the DTMF-driven system are echo cancelled. In a second mode, a voice message is directly streamed to the DTMF-driven system through an enabled port patch.

 
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< Audibility enhancement

< Method and apparatus for conducting subscriber's phone testing remotely via the internet

> Devices, software and methods for encoding abbreviated voice data for redundant transmission through VoIP network

> Echo processor generating pseudo background noise with high naturalness
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