2014-09-22

Computer Networks 2014-09-22

2014/09/22 Computer Networks Class Note

Circuit Switching FallBack (CSFB)

LTE networks fallback to 3G Network circuit switching while calling and sending/receiving SMS because of two reasons:

• Technical issue
• Business concern

Path

Routed

• Stateless (connection-less)
• Slower
  • Multiple memory access

Switched

• Stateful (connection-oriented)
• Faster
  • One memory access

Q & A

• Q: What construct connectivity?
• A: Nodes and links