Oscm Card - Cisco ONS 15454 DWDM Installation And Operation Manual

16.4.1 OSCM Card

16.4.1 OSCM Card
The OSCM card is used in amplified nodes that include the OPT-BST or OPT-BST-E booster amplifier.
The OPT-BST and OPT-BST-E include the required OSC wavelength combiner and separator
component. The OSCM cannot be used in nodes where you use OC-N/STM-N cards, electrical cards, or
cross-connect cards. The OSCM uses Slots 8 and 10, which are also cross-connect card slots.
The OSCM supports the following features:
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The OC-3/STM-1 section data communications channel (SDCC) overhead bytes are used for network
communications. An optical transceiver terminates the OC-3/STM-1, then it is regenerated and
converted into an electrical signal. The SDCC bytes are forwarded to the active and standby
TCC2/TCC2P cards for processing via the system communication link (SCL) bus on the backplane.
Orderwire bytes (E1, E2, F1) are also forwarded via the SCL bus to the TCC2/TCC2P for forwarding to
the AIC-I card.
The payload portion of the OC-3/STM-1 is used to carry the fast Ethernet UDC. The frame is sent to a
packet-over-SONET/SDH (POS) processing block that extracts the Ethernet packets and makes them
available at the RJ-45 connector.
The OSCM distributes the reference clock information by removing it from the incoming OC-3/STM-1
signal and then sending it to the DWDM cards. The DWDM cards then forward the clock information to
the active and standby TCC2/TCC2P cards.
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
16-26
OC-3/STM-1 formatted OSC
Supervisory data channel (SDC) forwarded to the TCC2/TCC2P cards for processing
Distribution of the synchronous clock to all nodes in the ring
100BaseT far-end (FE) UDC
Monitoring functions such as orderwire support and optical safety
Chapter 16 Card Reference
April 2006