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AT2004 4 Channels ADPCM Processor with Echo Cancellation and Conferencing
Atelic Systems, Inc.
AT2004 Application Note Preliminary 4 Channels ADPCM Processor with Echo Cancellation and Conferencing Version 1.0 January 29, 2001 Description
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The AT2004 is a four full-duplex channels, ADPCM processor with conferencing and echo cancellation capabilities. It ITU Standard for ADPCM compression for 40k, 32k, 24k and 16k bitrates with selectable µ-law and Alaw input/output. It conforms to ITU G.165/G.168 Digital Adaptive Echo Canceller specification for line echo delay up to 20ms. Using the command serial interface, each individual half-channel can be independently configured for ADPCM, conferencing and echo canceling features.
AT2004 Datasheet
