LG Electronics IP LDK-20 PRU2 Polarity Reversal detection Unit, PRCPTU2 PR and CPT detection Unit

IP LDK-20 Installation Manual Board Installation

3.3.3.2 Add-On Boards

PRU2 (Polarity Reversal detection Unit)

Description

The PRU2 can be optionally mounted on CBIB, and provides Polarity Reversal detection for call metering. It also provides four on-hook connection paths for SMS.

PRCPTU2 (PR and CPT detection Unit)

Description

The PRCPTU2 can be optionally mounted on CBIB, and provides four polarity reversal detection for call metering, four call progress tone detection to support the ACNR feature (Automatic Called Number Redial). It also provides four on-hook connection paths for SMS.

CPCU2 (FSK CID, PR and CPT detection Unit)

Description

The CPCU2 can be optionally mounted on CBIB, and provides four polarity reversal detection units for call metering, four call progress tone detection to support the ACNR feature (Auto Called Number Redial), and four FSK CID signal detection. It also provides four on-hook connection paths for SMS.

Figure 3.3.3.2 CPCU4

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