LG Electronics IP LDK-20 Tx+, SW7, Line no RJ45 Type Jack Terminating Resistors Switch, ※ Note

IP LDK-20 Installation Manual Board Installation

S Mode
CONNECTOR	PIN NUMBER	NO	SIGNAL NAME	FUNCTION
RJ45		1,2,7,8	Reserved
		3	RX+	Receive Data
		4	TX+	Transmit Data
		5	TX-	Transmit Data
		6	RX-	Receive Data

ISDN terminal

BRI Port1 Only
S interface					3	RX+	TX+
ON				R	6	RX-	TX-
1	2	3	4		4	TX+	RX+
				R	5	TX-	RX-
	SW5
RJ45 type jack
T			ON			Max. 1000 meters
S				1	2
CN21				SW7
			ON : S mode

TE1(or TA)

3

6

4

5

Figure 3.2.1.1b S Mode(Basic BRI Line Connector and Terminating Resistors)

SW5 and SW6 : 1,2 Pin Setting(The Default = All On Position)

LINE NO

RJ45 TYPE JACK

TERMINATING RESISTORS

SWITCH PIN1, 2 ON PIN1, 2 OFF

REMARK

Line 1	MJ1	SW5	Termination
Line 2	MJ1	SW6	Termination

Open Open

T or S Switch Setting of Basic BRI

LINE			SWITCH AND CONNECTOR
	MODE	SW5			REMARK
NO				SW7
		PIN 3, 4			CN21
	S	ON		ON	T
Line 1					S
					T
	T	OFF		OFF	Default
					S
Line 2				T Only

※NOTE

-SW5(PIN3, 4) : -40V POWER FEEDING. P

-SW7: THE MODE CHANGE OF THE BRI TRANSCEIVER.

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