Specifications

CHAPTER 2. Hardware of the OfficeServ 7200
2-8 © SAMSUNG Electronics Co., Ltd.
2.3.1 Control Boards
This section describes the configuration and functions of the MP20 and MP20S, which are
the main control boards that control all the functions of the OfficeServ 7200, and those of
the LCP, which is the minor control board.
2.3.1.1 MP20
The MP20 is the main control board that controls all the functions of the OfficeServ 7200
and is mounted on slot 0 of the basic cabinet. The MP20 performs voice switching,
processes signals, and manages the subscriber terminals.
Major Functions
The MP20 performs the functions below:
 Operates applications through the LAN interface.
 Easy Installation using the SD card.
 Back ups the databases.
 Provides ports for the Universal Asynchronous Receiver and Transmitter (UART) test.
 Holds a meeting, detects caller IDs and multi-frequency and controls door phones.
 Functions as the internal/external MOH or loud/common bell.
 Sets the time and shows table time.
 Functions as the Analog Phase Locked Loop (APLL) for the synchronization of the
digital subscribers.
Option Board
There are MFM, RCM, RCM2, MIS, CRM and Modem as option boards mounted in the
MP20.
The functions of these option boards are as follows:
 Multi-Frequency Module (MFM): MFM is the option board that is composed of ASIC
chips, which detect the DTMF signal. The location that the MFM board is mounted in
the MP20 board is provided and displayed on the MP20 board. If the MFM board is
mounted, it is available to detect the DTMF signals from 12 channels at the same time.
 R2 CID Module (RCM): RCM creates and detects the R2 signal that is signaling
signal between trunks as option board that is composed of ASIC chips that detect
Caller Identification (CID). The location that the RCM is mounted in the MP20 is
provided and displayed on the MP20. If the RCM is mounted, it is available to creates
the R2 signal through the 30 channels, and detect the R2 signal of 8 channels or office
line of 14 channel. Selecting a detected signal (R2/CID) is decided by the switch
location.