Cisco ONS 15454 SDH Specifications Page 131

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3-11
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
Timing Communication and Control (TCC-I) Card
Figure 3-5 TCC-I block diagram
3.6.4 TCC-I Specifications
CTC Software
Table 3-6 TCC-I System-Level Indicators
System-Level LEDs Definition
Red CRIT LED Used to indicate critical alarms in the network at the local terminal.
Red MAJ LED Used to indicate major alarms in the network at the local terminal.
Yellow MIN LED Used to indicate a minor alarm in the network at the local terminal.
Red REM LED Provides first-level alarm isolation. The REM LED turns red when an alarm
is present in one or several of the remote terminals.
Green SYNC LED Used to indicate that node timing is synchronized to an external reference.
Green ACO LED After pressing the alarm cutoff (ACO) button, the green ACO LED
illuminates. The ACO button opens the audible closure on the backplane.
ACO state is stopped if a new alarm occurs. After the originating alarm is
extinguished, the ACO LED and audible alarm control are reset.
DCC
Processor
Flash
Control
Processor
Framer/
LIU
RAM
FlashRAM
TDM/SCC Mux
Message
Router
TDM
Crossconnect
Timing
Controller
10BaseT
Craft
10BaseT
Modem
Ethernet
Hub
B
a
c
k
p
l
a
n
e
61208
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