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IP LDK-20 Installation Manual Board Installation
29
3.3 Installation of the CO Line Board
BOARD PORT
CONNECTOR
TYPE
DESCRIPTION CABLE REMARK
LCOB
2 ports
(4 LCO)
RJ45 Loop Start CO Line Interface 2 wire
STIB
2 ports
(2 BRI)
RJ45 ISDN Basic Rate Interface (2B+D) 4 wire
Switched
T or S
CBIB
2 ports
( 1 BRI+2 LCO)
RJ45
ISDN Basic Rate Interface (2B+D)
+ Loop Start CO Line Interface
4 wire (Port 1)
2 wire (Port 2)
T mode
only.
3.3.1 LCOB (CID Loop Start CO line Interface Board)
Description
The LCOB can be installed on the LCOB/STIB/CBIB connector, and provides 4 CO/PBX Loop Start CO Line
interfaces that support Pulse/DTMF signaling. Each Interface contains ring and loop current detection circuits, A/D
and D/A conversions, and pulse signaling circuitry.
LCOB can be optionally equipped with add-on boards: CPCU4 (FSK CID, Polarity Reversal & Call Progress Tone
detection Unit 4) to detect FSK signal for the incoming Caller-ID, polarity reversal and call progress tone; PRCPTU4
(Polarity Reversal & Call Progress Tone detection Unit 4) to monitor polarity reversal and call progress tone; or PRU4
(Polarity Reversal detection Unit 4) to monitor polarity reversal.
Figure 3.3.1 LCOB
※ NOTE
The PRU4, PRCPTU4 and CPCU4 can not be mounted on the LCOB at the same time. Select the
appropriate board for your application to install and use.
PRU4
PRCPTU4
CPCU4