Slc Board - Samsung SMG-3200 User Manual

SLC Board

The SLC (Subscriber Line Circuit) board provides the connection between a general analog
telephone and the SMG-3200 system, and can be installed in the universal slot (US1, US2) of a
system. The SLC board for the SMG-3200 system comes in a SLC board with 8 ports, and each
port provides a connection to an analog telephone.
The features and functions of the SLC board are as follows.
It provides a current of -48VDC for the connected subscriber telephone.
It provides the ring signal that indicates the subscriber telephone is ringing.
It reads the hook ON/OFF status, dial pulse, Ring trip, call answer status of the subscriber
telephone.
It protects the subscriber circuit and SMG-3200 system from lightening or high voltages,
AC voltage crossing etc. that are generated from the subscriber line.
It converts the analog signal into a digital signal with the PCM method to send them to the
control module. It also converts the digital signal with the PCM method into an analog
signal.
It provides hybrid function to separate the sending path and receiving path from the analog
voice signal.
Front Panel
SLC Board with 8 ports
P1 P2 P3 P4
SLC
The following table shows the meaning of the LED indicators on the front panel of the SLC board.
LED LED
LED LED
P1, P2, P3, P4
P5, P6, P7, P8
P1 P3 P5 P7
P5 P6 P7 P8 P2 P4 P6 P8
Color Color
Color Color
Green
Description Description
Description Description
LED is on during each port in use.
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