Modem Board; Figure 2.31 Modem Board Block Diagram - Samsung OFFICESERV 7100 Service Manual

2.5.16 MODEM Board

A modem used in OfficeServ 7100 system should support 2 wire full duplex, and this board
is the board that can be shared with the modem of iDCS 500 system. Modem board is
mounted on LOC1 of MP40 board. When the board is mounted, be careful of the direction
of the modem board. Modem board is connected to OfficeServ 7100 system through V.24
interface and uses the modem chip for central office that PCM highway interface is
available. In addition, the modem board supports the V.90 protocol. Modem board is
controlled through the serial communication type in OfficeServ 7100 and the command used
is standard AT command. SMC2 is allocated and used as the serial port for modem control.
2.5.16.1 Block Diagram
The modem board block diagram is as follows:
Serial
Host Intf.
© SAMSUNG Electronics Co., Ltd.
MCU
Control DATA
Addr
MDP

Figure 2.31 Modem Board Block Diagram

OfficeServ 7100 Service Manual
Addr
Memory
DATA
PCM
Interface
Tx/Rx
COMBO
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