Specifications

3-16 Main Processing Board Installation
Chapter 3 - System Installation
XTS-IP - Installation Manual December 2005
Main Processing Board Installation
The Main Processing Board (MPB) is installed in the MPB PCB card slot (slot MPB) of Cabinet 0.
MPBs include the MPB1, MPB2, and MPBE. The MPB may be equipped with two add-on
boards: a PMU for software programming and a MODU for modem access to the system.
Lithium Battery
The MPB contains a lithium dry-cell battery to maintain memory and real-time clock
functions. The battery is soldered on the MPB and connected to the circuitry by the ON-OFF
Dip Switch. Make sure the switch is set to the ON position before installing the MPB.
DIP Switch Positions (SW3)
The MPB also has an eight-position DIP switch, SW3. The default setting is: All ON position.
The function of each switch position is as follows:
Before programming the system, dip switch 8 (database default switch) should be placed in
the on position and power cycled off and on to initialize the system database to default. Once
the database has been initialized, switch 8 should be placed in the off position to protect the
database.
To view the current MPB software version on your LCD, use feature code 605.
To upgrade your MPB software, first use feature code 609 to view your MPB serial
number. Provide this serial number to Vodavi and you will be provided with a new
software identification code for the upgrade. Enter the new software identification
code after you access feature code 610.
Table 3-2: Dip Switch Settings (SW3)
Switch Function OFF ON
1N/A
RESERVED
leave these switches
in the ON position
2N/A
3N/A
4N/A
5N/A
6 Execute hardware tests at startup Disable Enable
7 Power up status trace of board (startup messages) Disable Enable
8 Database default on power up Disable Enable
Use extra care when removing RS-232 cables from the MPB or SIU boards. Hold the
MP B/ MISB ca rd in th e ca rd slot b efor e r emovi ng th e R S-23 2 c ab le . F ailu re to pe rf or m
this action may result in the MPB/MISB card being pulled from its slot.