Hardware manual

Issue 8 Electra Elite
5 - 112 Installing Electronic Telephone Units
6.4 VMS(2)/(4)/(8)-U( ) ETU
6.4.1 Description
The VMS(2)/(4)/(8)-U( ) ETU is a 2-, 4-, or 8-port Digital
Voice Mail system.
This ETU is a PC platform installed in the Electra Elite
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 (direct connect speeds up to 19.2
Kbps) to connect external modem
This ETU provides 2-, 4-, or 8-ports for digital voice mail.
The 2- and 4-port require the included digital signal
processor (DSP); the 8-port configuration requires a
DSP-F-21 Unit. Refer to Table 5-49 Configuration
Support Table.
Table 5-49 Configuration Support Table
Function Configuration Support
Applications Automated Attendant/Voice Mail with call
forwarding (release transfer)
Automated Attendant/Voice Mail without call
forwarding (await answer transfer)
Voice Mail only (No transfer)
Call Forwarding Supported
Connections Connects to backplane connector of the KSU
Hardware One VMS(2)/(4)/(8)-U( ) ETU
Message Notification Through message waiting lamp
MDM-F-20 Unit Used for remote connection