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Interface Cards
These cards provide the interface connections for telephone lines and stations to the KSU
and Expansion cabinet. They fit into the card slots to configure the system as required. Refer
to the Samsung iDCS100 Installation Guide for information on how to recognise and install
interface cards.
1. Trunk Cards
AC15
Contains three 4-wire tielines. Signalling frequency is 2280 Hz.
3TRK
Provides three loop-start C.O. interface circuits. The first two circuits are equipped with power
failure transfer (PFT) relays. Each circuit contains a Metering Pulse Detection (MPD) or Po-
larity Reversal Signal (PRS) interface. (The optional MPD or PRS hybrid chips for a Sam-
sung DCS system can be used.)
6TRK
Provides six loop-start C.O. interface circuits. The first two C.O. circuits are equipped with
PFT relays. Each circuit contains a Metering Pulse Detection (MPD) or Polarity Reversal
Signal (PRS) interface. (The optional MPD or PRS hybrid chips for a Samsung DCS system
can be used.)
.
Figure 2
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2 KSU With Expansion Type “B” Cabinet