Panasonic KX-NS1000 Installation Manual page 160

4.5.2 SLC2/BRI4 Card (KX-NS0280)
LINE LED Pattern
Layer 1 Layer 2
OFF OFF
ON OFF
ON ON
ON OFF
ON ON
Layer 1: ON (Synchronous)
Layer 2: ON (Link established)/OFF (Link not established)
Master Clock: ON (Master)/OFF (Slave)
Maximum Cabling Distance of ISDN DSU Connection
The maximum length of the cable that connects the DSU and the PBX is shown below:
DSU
160 Installation Manual
Master
Clock
OFF
1 s
OFF
1 s
OFF
1 s
ON
1 s
ON
1 s
CAT 5: Under 1000 m
LED Pattern
Point-to-Point