• Single 3 V Power Supply Operation
• ADPCM Algorithm : Complies completely with 1988's version ITU-T G.721 (32 kbps)
• Transmit/Receive Full-Duplex Operation
• Transmit/Receive Synchronous Mode Only
• Serial ADPCM Transmission Data Rate : 32 kbps to 2048 kbps
• Serial PCM Transmission Data Rate : .