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IP LDK-20 Installation Manual Board Installation
24
S Mode
CONNECTOR
PIN NUMBER
NO
SIGNAL NAME
FUNCTION
1,2,7,8
Reserved
3
RX+
Receive Data
4
TX+
Transmit Data
5
TX-
Transmit Data
RJ45
6
RX-
Receive Data
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)
TERMINATING RESISTORS
LINE NO
RJ45 TYPE JACK
SWITCH
PIN1, 2 ON
PIN1, 2 OFF
REMARK
Line 1
MJ1-1
SW5
Termination
Open
Line 2
MJ1-2
SW6
Termination
Open
T or S Switch Setting of Basic BRI
SWITCH AND CONNECTOR
LINE
NO
MODE
SW5
PIN 3, 4
SW7
CN21
REMARK
S
ON
ON
Line 1
T
OFF
OFF
Default
Line 2
T Only
• NOTE
- SW5(PIN3, 4) : -40V POWER FEEDING.
- SW7: THE MODE CHANGE OF THE BRI TRANSCEIVER.
- CN21: SET FOUR 2PIN JUMPERS AS SHOWN IN THE ABOVE TABLE ACCORDING TO EACH MODE.
TE1(or TA)
3
6
4
5
TX+
TX-
RX+
RX-
BRI Port1 Only
RX+
RX-
TX+
TX-
3
6
4
S interface
R
R
ISDN terminal
SW7
1
2
ON
ON : S mode
SW5
1
2
3
4
ON
T
S
CN21
5
RJ45 type jack
Max. 1000 meters
T
S
T
S