OfficeServ 7200 System Description
© SAMSUNG Electronics Co., Ltd.
2-11
2.3.1.2 MP20S
MP20S is a main control board that controls all functions of the basic cabinet and is
mounted on slot 0 of the basic cabinet. It performs the voice switching function, signal
processing function. MP20S carries out the system booting function and data management
function.
MP20S strengthens the flexibility of system and by applying the VoIP function and IPC
between cabinets raises the reliability by using the HDLC protocol.
Major Functions
MP20S offers the following functions:
Various application operations via LAN interface
Convenient installation via MMC card
Database backup
Port for Universal Asynchronous Receiver and Transmitter (UART) test
External/Internal Music On Hold (MOH) and Loud/common bell functions
Time setting and display function
Phase Locked Loop (APLL) function for the synchronization with digital subscribers
Option Board
The MODEM can be mounted on option slot of MP20S.
The MODEM has the following functions:
MP20S has a 2-Wire Full Duplex modem and can commonly use it with OfficeServ
500 system. Be careful with the direction of the MODEM when mounting/
dismounting the board on the MP20S.
The MODEM operates in OfficeServ 7200 via V.24 interface and uses a modem chip
for Central Office, which can perform Pulse Code Modulation (PCM) highway
interface. In addition, the MODEM supports V.90 protocol. OfficeServ 7200 controls
the MODEM via serial communication using standard AT commands.
Table 2.6 Option board of the MP20S
Option board
MP20S
Max
LOC1
LOC2
MODEM
-
1
