User's Manual

MC-Series System Installation & Testing
System Description
RadioFrame Networks, Inc.
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2.2.1.2 BPC
Three BTS Processing Cards (BPCs) are located in BIC front slot positions 2, 3, and 4. The BPC
hosts a microprocessor to perform iDEN voice management and is responsible for layer 2 call
processing.
Figure 7 BPC indicators
2.2.1.3 ERTM
The Ethernet Rear Transition Module (ERTM) is located in the top rear slot of the BIC. The ERTM
interfaces to the CRIC via eight RMII ports in the chassis midplane. The ERTM provides Ethernet
connectivity between the BIC and AIC as well as a connection to the CRTC.
Figure 8 ERTM ports and indicators
2.2.1.4 CRTC
The Coax-to-RJ45 Transceiver Card (CRTC) is located in the bottom rear slot of the BIC. The
CRTC provides conversion of the 10-base 2 connection at the iSC to a 10-base T connection in
the BIC.
Figure 9 CRTC ports and indicators