Panasonic KX-NS500 Installation Manual page 144

4.5.2 PRI30/E1 Card (KX-NS5290CE)
When you select E1 use
Indication
STATUS
This can be set to indicate "Normal (a port is in use)" through system settings. For details, consult your dealer.
*1
Maximum Cabling Distance of Extension Connection
The maximum length of the extension cable that connects the PRI port is shown below:
144 Installation Manual
Colour Description
Green Off : All Ports OUS or Fault
On: At least one port is In Service
Flashing (60 times per minute)
CAT 5: Under 200 m
: Master Clock (On)
*1