ADTRAN SLC-5 U-BR1TE III User Manual Page 121

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61202052L1-1 TSU 100 User Manual
D-1
Appendix D System Messages
This appendix lists and defines the alarm and status messages
that appear on the TSU 100 screen.
ALARM MESSAGES
Network Interface (NI)
Nx56/64 Interface
Red Alarm NI unable to frame align with incoming signal
Yellow Alarm Remote alarm indication (RAI) being received
from far end
Blue Alarm Unframed all ones (1s) (AIS) being received at NI
Loss of Signal No signal detected at NI
Clock Slip Difference in frequency of the data clock at the net-
work and DTE
PLL Alarm Unable to achieve Phase Locked Loop on the clock
provided by the network interface.
Zeros Alarm All zeros (0s) data being sent toward the network
interface
No EXT Clock No external transmit clock at DTE (only appears if
EXT CLK is selected)
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