MT9122 Overview
The MT9122 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation conforming to ITU-T G.165 requirements. The MT9122 architecture contains two echo cancellers which can be configured to provide dual channel 64 millisecond echo cancellation or single channel 128 millisecond echo cancellation. The MT9122 supports ITU-T G.165 or G.164 tone disable requirements.
MT9122 Key Features
- Dual channel 64 ms or single channel 128 ms echo cancellation
- Conforms to ITU-T G.165 requirements
- ITU-T G.165/G.164 disable tone detection
- Narrow-band signal detection
- Programmable double-talk detection threshold
- Non-linear processor with adaptive suppression
- Offset nulling of all PCM channels
- ST-BUS or variable-rate SSI PCM interfaces
- Selectable µ/A-Law ITU-T G.711; µ/A-Law Sign
- Per channel selectable 12 dB attenuator