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1 • Introduction Model 6511RC User Manual
18 Hardware overview
Figure 6. Model 6511RCT rear entry car front panel LEDs and ports
Three versions of the rear card offer the following connector types for the STM-1 port:
• SC20—Optical interface presented on Rx and Tx SC connectors for singlemode fiber with a wavelength of
1310 nm. The interface complies with ITU specifications G.957 and G.652.
• EBNC—Electrical interface presented on Rx and Tx 75-ohm BNC connectors.
• SC20/EBNC—Optical and electrical interfaces as described previously.
The Model 6511RC connects to other blades in the chassis via the ForeFront cPCI chassis midplane. The chas-
sis mid-plane contains two digital communications busses, the H.110 TDM bus, and the PICMG 2.16
Packet-Switched Ethernet bus. The front blade connects to both busses via connectors on the chassis mid-
plane. The blade uses the two mid-plane busses for digital communications with other processor blades
installed and operating in the chassis.