E2U0031-39-61 ¡ Semiconductor MSM7580 ¡ Semiconductor ITU-T G.
721 ADPCM TRANSCODER This version: Jun.
1999 MSM7580 Previous version: Aug.
1998 GENERAL DESCRIPTION The MSM7580 is an ADPCM transcoder which is used by the new digital cordless system.
It converts 64 kbps voice PCM serial data to 32 kbps ITU-T G.
721 ADPCM serial data, and vice versa.
This device consists of two systems with full-duplex voice data channels and a data-through mode.
The MSM7580 provides cost effective solutions for digital cordless office telephone systems which are incorporated into PABXs and for the public base stations which are connected to the central office through digital PSTNs.
FEATURES • Conforms to ITU...

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