RadioFrame Networks Inc MCSERIESMP User Manual

Page of 167
MC-Series System Installation & Testing 
System Description 
RadioFrame Networks, Inc.
  
11 
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