Fundamentals of VoIP
January 10, 2009
Contents at a Glance
Beginnings
Understanding H.323
Understanding SIP
Do You Hear What I Hear?
Putting it all Together
Voice Codecs
Softswitches
Vendor
Network Architectures
Looking
Under the Hood
Contents in Detail
Beginnings
I:
Who Sets the Standards for VoIP?
II:
Why TCP/IP Is not Sufficient for VoIP
Understanding H.323
I:
History and Architecture
II:
Protocols Supporting Terminals
III:
Message Formats
IV:
Testing System Interoperability
Understanding SIP
I:
History and Architecture
II:
Protocol Capabilities
III:
Message Formats
IV:
Describing the SIP Session
V:
SIP Signaling
VI:
Testing SIP Interoperability
Do You Hear What I Hear?
I:
Defining Quality of Service
II:
Defining Key Transmission Impairments
III:
Dealing with Latency
IV:
Measuring Toll Quality
V:
Integrated Services
VI:
Resource Reservation Protocol
VII:
Differentiated Services
VIII:
Multiprotocol Label Switching
IX:
Queuing Solutions for QoS
Putting it all Together
I:
VoIP Network Design
II:
Implementation Tips
III:
Implementation Tips, continued
IV:
Implementation Tips, concluded
Voice
Codecs: the tale of the Secret Decoder Ring
Softswitches
I:
Getting there from here
II:
Functional planes of the softswitch architecture
III:
The Media Gateway Controller
IV:
Media Gateway architecture
V:
Media Gateway Control Protocol
VI:
MEGACO/H.248 Protocol
VII:
IP Multimedia Subsystem
VIII:
IP Multimedia Subsystem functions
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