Cbib (Cid Loop Start Co Line + Basic Rate Interface Board) - LG IP LDK-20 Installation Manual

IP LDK-20 Installation Manual

3.3.3 CBIB (CID Loop Start CO line + Basic Rate Interface Board)

Description
The CBIB can be installed on the LCOB/STIB/CBIB connector, and provides 2 CO/PBX Loop Start CO Line interfaces
that support pulse/DTMF signal and one port of ISDN Basic Rate Interface T-mode. CO Interface circuit contains ring
and loop current detection circuits, A/D and D/A conversions, and pulse signaling circuit.
The analog LCO port of the CBIB can be optionally equipped with add-on boards (Figure 3.3.3): CPCU2 (FSK CID,
Polarity Reversal & Call Progress Tone detection Unit 2) to detect FSK signal for the incoming Caller-ID, polarity
reversal and call progress tone; PRCPTU2 (Polarity Reversal & Call Progress Tone detection Unit 2) to monitor
polarity reversal and call progress tone; or PRU2 (Polarity Reversal detection Unit 2) to monitor polarity reversal.
•NOTE
- SW1: The default is ON position.
The PRU2, the PRCPTU2 and the CPCU2 can not be mounted on the CBIB at the same time. Select the
-
board that is appropriate for your application to install and use.
Figure 3.3.3 CBIB
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Board Installation