Lucent Technologies 555-230-024 Manuel D’Utilisation

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DEFINITY AUDIX Voice Messaging System
Issue 5    January 1998
9-3
555-230-024
The entire system is contained on circuit cards, occupying five consecutive slots 
in a switch carrier. All the major components are economically mounted onto the 
multifunction board using the latest technology in large scale integration circuit 
chips and in surface mount fabrication. The components mounted on the board 
include the central processing unit, the small computer system interface unit that 
supports the tape drive and hard disk, the digital signal processor complexes 
that do speech processing, and the time slot interfaces for the switch.
In addition, an alarm board monitors the system power and environmental condi-
tions, holds the disk drive, and includes a built-in modem for remote mainte-
nance. The DEFINITY AUDIX System operates by emulating a switch digital port 
board.
Reliability and Security
In keeping with its commitment to assist clients in combating toll fraud, Lucent 
also designed the DEFINITY AUDIX System with security precautions against 
fraudulent access attempts. For example, the system only allows a transfer of 
calls to other voice mail subscribers. When a caller reaches the system and 
requests a transfer out, the system first checks the requested extension number 
against its subscriber database. If the extension number is not in the database, 
the transfer attempt is denied. Additionally, mailbox passwords can contain as 
many as 15 digits.
The alarm board on the DEFINITY AUDIX system has its own processor that 
allows maintenance and diagnostic access if the main processor fails. A liquid 
crystal display on the unit lets on-site technicians check system status. There 
also is a robust set of built-in diagnostics that technicians can access either 
on-site or remotely through a built-in modem. A special alarm-originating feature 
helps speed problem diagnosing and correction.
The system routinely performs self diagnostics. If it detects a problem. it automat-
ically dials a Technical Service Center and produces a detailed alarm message 
with diagnostic specifics. The Technical Service Center staff responds quickly via 
the built-in modem to perform further diagnostics, isolate the problem. and take 
corrective action. As a back-up, the DEFINITY AUDIX system can send an alarm 
message to the switch.