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1-6
Chapter 1
Introduction to OfficeServ500
Technology
Memory
The system operates using stored program control. The program is stored on a SmartMedia
card inserted into the Main Control Processor (MCP2) card.
MCP2 Card
The card contains a minimum of 16 Megabytes (MB) of NAND-Flash memory providing a
backup customer database and a backup operating program. The system boots from a 512
kbyte boot ROM and downloads the operating program into 64MB of DRAM on the MCP2
card. The customer database is stored in 4MB of non-volatile SRAM for a single cabinet sys-
tem.
Microprocessors
The system uses distributed processing. Its primary processor is a 32-bit Motorola MC68302
operating at a clock speed of 80MHz on the MCP2 card. This provides all the processing
necessary for a single cabinet system. In a multiple cabinet system the secondary level of
processing is on the SCP2 card for the first cabinet and on the LCP2 cards for the expansion
cabinets. These secondary processors are MC68302 processors running at 16 MHz and pro-
vide local control of each cabinet. The tertiary level of processing is done in the keysets. The
digital keysets use a Hitachi H8 processor for data communication within the system.
Programming
The system is self-configuring. This means that immediately after switching on, the system
reads the types and locations of all installed interface cards and keysets and assigns default
data to them. This data provides for system operation within a few minutes of power on. All
trunks and stations are assigned three- or four-digit numbers according to the settings of the
switches on the MCP2 card and the default numbering plan. This numbering plan is flexible
and may be changed to suit customer requirements during installation.
The system can be programmed from any LCD display keyset without interrupting system
operation. There are three levels of programming: technician (or system), customer and sta-
tion. The technician level has access to all programs and can allow the customer access to
system programs as needed. Technician and customer access levels are controlled by differ-
ent security passcodes and access procedures.
The system also allows the use of a proprietary computer program called PCMMC. This per-
mits a technician to program the system using a personal computer. PCMMC can be used
on-site to modify the customer database or to download (save) the entire customer database
to a file. This file can then be saved as a backup and be uploaded when required to restore
the database.
Using modems, PCMMC can access the system remotely (off-site) to make database
changes or perform uploads or downloads of the customer database as if the technician were
on-site.
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