Maintenance Guide Part 1

NeTIS MAINTENANCE GUIDE – Version 1.1 31/139
3.3 Normal operations
During normal operation the state of the indicators is as shown in the table below:
Board Indicators state
ALIM 220v On
28v On
12v On
5v On
-12V On
CPUBDT + 5v On
TLY Slow flashing
LOC Off
TFR Off
+ 5v On
INT Fast flashing
ACT Slow flashing
MCCH On for the active switch
SUPIP + 5v On
INT Fast flashing
ACT Flashing if phone traffic (reception of phone blocks)
CCT2 + 5 v On
MFR Slow flashing
D1 Off / flashes during communications (reception of phone
blocks) - odd channels
D2 Off / flashes during communications (reception of phone
blocks) - even channels
COM3 or COM4
Site communication mode
COM3
Site communication mode
+ 5v On
ACT Slow flashing
RX A On = Frame locked in G703
or clock presence in V11
flashes if star network
fixed if ring network
ERR A Off – bit error in G703
RX B
ERR B On if no link
COM3 or COM 4
T2 mode
+ 5v On
ACT Slow flashing
RX A On = Frame locked in G703
ERR A On
RX B Off
ERR B Off
COM S0 + 5v On
ACT Slow flashing
RX On = synchronisation with remote equipment
B1 On during communication
B2 On during communication