G.165 Modem Tone Detect
FAX / MODEM G.165 (2100 HZ) TONE DISABLE
In telecommunications systems, it is often necessary to detect the presence of a voice-band modem signal.
- Functions are C-callable
- Multiple channel operation
- Low per-channel memory requirements
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ADT G.165 is available on the above Platforms: Other configurations are available upon request.
In telecommunications systems, it is often necessary to detect the presence of a voice-band modem signal. In particular, when using a line echo canceller, it is desirable to disable certain aspects of echo cancellers or echo suppressors. Modems therefore precede their transmissions with a disable tone. These tones are described in ITU recommendations G.164 and G.165.
The ADT G.165 Tone Detector detects both of the aforementioned disable tones.
API function call summary
G165DET_ADT_initG165Detect(…) Initializes G165 Detector channel
G165DET_ADT_g165Detect (…) ExecutesG165 detector function
G165DET_ADT_g165ReleaseCheck(…) Executes G165 Release Check