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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 2 Common Control Cards
2.3.1 TCC2P Functionality
Figure 2-2 shows the faceplate and block diagram for the TCC2P.
Figure 2-2 TCC2P Faceplate and Block Diagram
2.3.1 TCC2P Functionality
The TCC2P card supports multichannel, HDLC processing for the DCC. Up to 84 DCCs can be routed
over the TCC2P card and up to 84 section DCCs can be terminated at the TCC2P card (subject to the
available optical digital communication channels). The TCC2P selects and processes 84 DCCs to
facilitate remote system management interfaces.
The TCC2P also originates and terminates a cell bus carried over the module. The cell bus supports links
between any two cards in the node, which is essential for peer-to-peer communication. Peer-to-peer
communication accelerates protection switching for redundant cards.
DCC
Processor
Flash
Control
Processor
Framer/
LIU
RAM
FlashRAM
TDM/SCC Mux
Message
Router
TDM
Crossconnect
Timing
Controller
10BaseT
Craft
Secure
10BaseT
Modem
Ethernet
Switch
Voltage
Monitoring
B
a
c
k
p
l
a
n
e
115483
FAIL
A
PWR
B
ACT/STBY
ACO
CRIT
MIN
REM
SYNC
RS-232
TCP/IP
MAJ
ACO
TCC2P
LAMP