Layer 1 Layer 2
Master
Clock
LED Pattern
ON OFF OFF
ON ON OFF
ON OFF ON
ON 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 S0 Bus Connection
The maximum length of the extension cable that connects the PBX and the ISDN terminal equipment (TE) is
shown below:
TE
CAT 5: Under 1000 m
CAT 5: Under 150 m
CAT 5: Under 50 mCAT 5: Under 500 m
TE 1
TE 1
TE 8
TE 8
Point-to-Point
Point-to-Multipoint
Expansion
Point-to-Multipoint
76 Installation Manual
3.5.4 BRI2 Card (KX-NCP1280)