EECS 122, Lecture 24
Problem Set 4
Telephone Net Concepts
Recent History
More Recent History
Telephone Net Structure
Hierarchical Addressing Example
The Details
End Systems
Newer End-Systems
Transmission
TDM Operation
Plesiochronous Operation
Justification or (Pulse/Bit) Stuffing
Problems with Plesiochrony
Synchronous Operation (SONET)
Benefits of SONET
Complications of SONET
Switching
Simple Signaling
Simplified Controller FSM
Common Channel Inter-office Signaling (CCIS)
Signaling System 7
Routing Structure
Telephone Network Routing
Internet vs Telco Routing
Dynamic Non-Hierarchical Routing (DNHR)
The Erlang Map
Erlang Formula
Intuition
Metastability in DNHR
Other Techniques
Email: kfall@cs.berkeley.edu
Home Page: http://www-inst.eecs.berkeley.edu/~ee122