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Single tone multi frequency

STMF
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Digital/TEC definition

of

Single Tone Multi Frequency

from

Tunstall Healthcare (UK) Ltd

Source

This is method of transmitting DTMF based data across a next generation network in a more reliable manner when compared to using DTMF. As it's based on single tones, rather than dual tones it is thought to be more tolerant of poor network conditions when compared to DTMF.

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