
SIP Design Choices
8/31/2005 Copyright - Ahlgren 2005 14
AhlTek
Distributed architecture:
Smart end points and components
Separate signaling:
Control, transport & media description:
Allows addition of new applications or media types
Transport protocol neutrality:
Runs over reliable (TCP, SCTP)
Runs over unreliable (UDP) channels, with minimal assumptions
Request based routing:
Direct routing for high performance or proxy-routed for control
Extensibility:
Distributed architecture, smart UA, proxies, registrars
Flexible messaging formats
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