notes-20160802c: Third example of a converted page

Manually removed a lot of strings of the form: <![if !vml]>

Voice over IP (VoIP)
Unlike the traditional Public Switch Telephony Network - where processing is done inside the network.
Network Convergence:
FALL 2016, PERIOD 1
21
IK2554

VoIP server

;

IP end-to-end
(Now) we think about a converged network which is a global network
CODEC
IP stack
radio
CODEC
IP stack
ethernet
Cellular IP terminal
Fixed IP terminal
call/session routing transcoding

IP cloud
VoIP is an end-to-end architecture [RFC 1958] which exploits processing in the end points.
In the past, many different networks - each optimized for a specific use: POTS, data networks (such as X.25), broadcast radio and television, … and each of these in turn often had specific national, regional, or proprietary implementations)