CHAPTER 2. Hardware of OfficeServ 7030
2-12
© SAMSUNG Electronics Co., Ltd.
2.3.2.2 4TM
4TM (4 port Trunk Module) provides analog trunk line ports. One board has the CID path.
In addition, the board provides voice through trunk lines and transmits the voice data of 64
kbps to each channel.
Main Functions
4TM voice trunk line board performs the functions below:
Detecting ring reception
Detecting on/off-hook
Transmitting dial pulse
CID function
Line monitoring function that checks if the line is connected periodically to transmit
the voice data can be transmitted.
Caller information relay path function
Specifications
The specifications of 4TM voice trunk line board are as follows:
Four trunk line ports
Board t View of 4TM
The front view of 4TM board is shown in the figure below:
Figure 2.6 Board View of 4TM
The components on the front panel of 4TM have the functions below:
Table 2.9 Ports of 4TM Board
Port
Function Description
P1~P4
Trunk Ports
