ZL38065 - Zarlink Semiconductor

ZL38065 32 Channel Voice Echo Canceller

The ZL38065 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation conforming to ITU-T G.168 requirements. The ZL38065 architecture contains 16 groups of two echo cancellers (ECA and ECB) which can be configured to provide two channels of 64 ms or one channel of 128 ms echo cancellation. This provides 32 channels.

Features

• Independent multiple channels of echo cancellation; from 32 channels of 64 ms to 16 channels of 128 ms with the ability to mix channels at 128 ms or 64 ms in any combination Fully compliant to ITU-T G.165, G.168 (2000) and (2002) specifications Passed all AT&T voice quality tests for carrier grade echo canceller systems. Unparalleled in-system tunability Sub 50 ms initial convergence times under many typical network conditions Fast reconvergence on echo path changes Patented Advanced Non-Linear Processor with high quality subjective performance Superior noise matching algorithm PCM coding, µ.