Nortel DMS-100 Series Maintenance Manual page 34

2-14 Star Remote System hardware
Table 2-4 System status indicators (Sheet 2 of 2)
Indicator name
Clock lock
Converter fail
Pack failure
Star Hub circuit card interconnections
The following figure shows how the circuit cards functionally interconnect in
the Star Hub.
297-8353-550 Standard 05.01 March 2001
Circuit card LED color
NTTR77AA Green
NT6X53AA Red
NTTR60AA Red
Function
Indicates clock source is locked to the
C-side
Identifies a converter failure (either +5 V or
+15 V)
Identifies a ringing generator failure