Pin Assignments
RJ45 Connector for Trunk Use
No. Signal Name Level [V] Function
1 RX+ (+) Receive data (+)
2 RX- (-) Receive data (-)
3 Reserved – –
4 TX- (-) Transmit data (-)
5 TX+ (+) Transmit data (+)
6-8 Reserved – –
RJ45 Connector for Extension Use
No. Signal Name Level [V] Function
1 TX- (-) Transmit data (-)
2 TX+ (+) Transmit data (+)
3 Reserved – –
4 RX+ (+) Receive data (+)
5 RX- (-) Receive data (-)
6-8 Reserved – –
RJ45 Connector for Single Line Telephone Extension Use
No. Signal Name Function
1-2 Reserved –
3 RB Ring B
4 RA Ring A
5 TA Tip A
6 TB Tip B
7-8 Reserved –
LED Indications
Indication Colour Description
SERR Red Non-synchronisation status indication
• OFF: Normal
• ON: Out of synchronisation
Installation Manual 163
4.5.3 SLC2/PRI30 Card (KX-NS0290CE)