Technology; Programming - Samsung OfficeServ 100 General Description Manual

Chapter 1
1-6
Introduction to the OfficeServ100

Technology

Memory
All specific customer data is stored in Random Access Memory (RAM) which is protected
against the loss of AC power to the system by an onboard battery back-up system.
The OfficeServ 100 program is stored in 16 Mb NAND flash memory on the Main Control
Processor (MCP1) card. The system boots from a 512 K boot ROM and downloads the op-
erating program into 32 Mb of SDRAM on the MCP1 card. The customer database is stored
in 1 Mb of non-volatile SRAM.
Microprocessors
OfficeServ 100 uses distributed processing. The primary processor is a 32–bit Motorola®
MPC855 on the MCP1 card operating at a clock speed of 50 MHz. Secondary processing is
carried out in some special cards, such as BRI, and also in keysets. Secondary processing
on the base board is done via an MC68EC000 processor running at 16 MHz to provide local
control of cards. Digital keysets use a Hitachi H8 processor for data communication.
Switching
The system provides 256 switchable digital channels. Each of the 256 digital channels is
automatically assigned to carry voice or data as required by system operation in a PCM for-
mat.
In addition to these channels, the system uses Digital Signal Processors (DSPs). Each DSP
may be configured by the switching control program as a DTMF sender, a DTMF receiver or
as a C.O. tone detector on a per–call basis. Four DSP channels are provided by default.
Four additional DSPs are added when a MISC card is installed. This means that the system
contains a total of eight DSP channels when fully expanded. The DSP channels are fully
shared throughout the system as a common resource.

Programming

OfficeServ 100 is a self-configuring system. This means that immediately after applying
power, the system reads the types and locations of all installed interface cards and keysets
and assigns default data to them. All trunks and stations are assigned numbers according to
the default numbering plan. This numbering plan is flexible and may be changed to suit cus-
tomer requirements.
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 dif-