OfficeServ 7030 System Description
© SAMSUNG Electronics Co., Ltd.
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2.3.3 Voice Station Board
This section describes the board that offers the station voice service.
2.3.3.1 4SM
4SM (4 port SLI Module) supports 4-port for analog stations. It interworks with regular
phones via the station to provide voice communication.
Main Functions
The main functions of 4SM voice station board are as follows:
Generating the ring of 20 Hz
Detecting Dial Tone Multi Frequency (DTMF)/dial pulse
Detecting on/off-hook
Generating a tone
Specifications
The specifications of 4SM voice station board are as follows:
Four station ports
Board View of 4SM
The front view of 4SM board is shown in the figure below:
Figure 2.7 Board View of 4SM
The components on the front panel of 4SM have the functions below:
Table 2.10 Ports of 4SM
Port
Function Description
P1~P4
Station ports of analog phones
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