NEC Australia Pty Ltd Xen Master & Xen Axis
5 - 164 Installing Electronic Telephone Units
A6-324000-642-01 – Release 4.0
May 2001
5.5 VMS(2/4/8)-U13 ETU
5.5.1 Description
The VMS(2/4/8)-U13 ETU is a 2-, 4- or 8-port Digital Voice
Mail system.
This ETU is a PC platform installed in the Xen system and
contains hard disk space for voice recording storage and
application software. A digital signal processor/voice
processing section handles the following functions:
✆ DTMF detection
✆ DTMF generation
✆ General tone detection
✆ FAX CNG tone detection
✆ PCM compression for audio recording/playback
✆ Automatic gain control (AGC)
✆ A serial port capable of direct connect speeds up to
19.2 Kbps or for connecting external modem.
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