▄ Cisco ASR 5000 Series Product Overview 
  Ethernet 10/100 and/or Ethernet 1000 Line Cards: Installed directly behind PSCs/PSC2s, these cards provide 
the physical interfaces to elements in the operator‘s network. Up to 26 line cards should be installed for a fully 
loaded system with 13 active PSCs/PSC2s, 13 in the upper-rear slots and 13 in the lower-rear slots for 
redundancy. Redundant PSCs/PSC2s do not require line cards. 
  Redundancy Crossbar Cards (RCCs): Installed in the lower-rear chassis slots directly behind the SMCs, 
RCCs utilize 5 Gbps serial links to ensure connectivity between Ethernet 10/100 or Ethernet 1000 line cards 
and every PSC/PSC2 in the system for redundancy. Two RCCs can be installed to provide redundancy for all 
line cards and PSCs/PSC2s. 
Important:  Additional information pertaining to each of the application and line cards required to support 
GPRS/UMTS wireless data services is located in the Hardware Platform Overview chapter of the Product Overview 
Guide. 
 
Operating System Requirements 
 
TTG functionality is available for the ASR 5000 running StarOS Release 9.0 or later.