Vodavi STARPLUS Triad XTS, Installation Manual

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Peripheral Cards and Components 4-9
Chapter 4 - Maintenance and Troubleshooting
System Functions
The following functions are related to system resources and the common equipment boards
controlling them.
The Master Processor Board provides system central processing, real-time clock, digital (PCM)
voice processing and gain control, feature control, customer database, system tone
generation, and conference functions.
The Modem Unit provides an asynchronous modem for access to the system database and fault
reporting features from a remote site. This unit also provides an RS-232 port for local access.
The Program Module Unit (PMU) provides the system operating software.
Table 4-7: Master Processor Board (MPB)
Problem Possible Solutions
Complete system failure …
† Check AC power source.
† Replace the PMU.
† Replace the MPB.
† Reset the system.
SMDR and display phone time-of-
day incorrect … Re-program system time and date.
Loss of system intercom dial tone
and call processing tones …
† Reset system.
† Replace MPB.
Loss of customer database
programming … Verify status of initialization switch and
database backup battery connection.
SMDR RS232C Port inoperative … Check programming.
Modem Port (or 2nd RS-232C port)
inoperative … Verify Modem Unit, MODU, is installed and
programming is correct.
Table 4-8: Modem Unit (MODU)
Problem Possible Solutions
Can not access system database
programming remotely … Check Modem programming.
Second RS-232C port is inoperative
… Check Modem Bypass programming.
Table 4-9: Program Module Unit (PMU)
Problem Possible Solutions
The system is inoperative … Ensure that an operable PMU is installed.
The system does not operate without this
component.