Voice Echo Cancellers Employ Patented Algorithm

To better enhance voice quality in multi-service ATM, SONET/SDH, and wireless networks, the MT93L04 and MT93L000 low-power voice echo cancellers employ a patented algorithm to clean up echo tails up to 64 ms in length. The MT93L04 is a 128-channel device that meets the ITU-T G.168 voice-quality standard. The 32-channel MT93L00 can be configured for 32 channels of cancellation at 64 ms or 16 channels at 128 ms. It can also be configured in any combination of the two. Both devices operate at 1.8V with a tolerance of up to 5V on the input and output pins. The MT93L04 has a typical power consumption of 600 mW and the MT93L000 typically consumes 150 mW. Prices are $245.75 (MT93L04) and $74.47 (MT93L00) each/10,000. ZARLINK SEMICONDUCTOR INC., Ottawa, Canada. (613) 270-7317.