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The Basics of Voice over Internet Protocol
IEC Publications, Pages: 148
Chapter 1: Introduction
The Opportunity for Voice Traffic in IP Networks
Open Standards for VoIP
Chapter 2: Characteristics of Voice and IP Traffic
Public Telephone Network Service versus IP Networking
IP Voice Standards
Basics for Transmitting Voice in IP Packets
VoIP Overhead and Its Effects
The General VoIP Architecture Model
Voice Content Packetization
Voice Packet Transmission
Voice Packet Reception
Standards for VoIP Beyond H.323
Interconnecting VoIP Nets to the Public Telephone Network
Assigning IP Telephone Addresses – DHCP
Chapter 3: VoIP Models for Connection
Enterprise Connection over Public and Private Networks
Residential Connection over Networks
VoIP Terminals
Chapter 4: VoIP Using the H.323 Protocol
The ITU H.323 Protocol
Terminals
Gateways
Gatekeepers
The Operation of an H.323 Network
The H.323 Frame
H.323 Audio Coding and Compression
H.323 Call-Setup Signaling and Message Flow
Operation of Gateways and Gatekeepers in an H.323 Network
Real-Time Transfer Protocol
Chapter 5: SIP for Voice Transmission
SIP Messages
SIP Headers and the TCP/IP Packet
SIP Addressing and Operation
The Specifics of User Agents Using SIP Proxy Servers
The More Detailed Flow Using Proxy and Redirect Servers
Chapter 6: Gateways and Gatekeeper Protocols
Media Gateway Control Protocol – MGCP
The MGCP Commands
Media Gateway Control Protocol – MEGACO
Simple Gateway Control Protocol
Skinny Protocol – An Alternative to MGCP and MEGACO
Summary Comparison of the Protocols
Chapter 7: Transmitting Voice over a Public WAN and IP Network
IP Voice over Frame Relay – IP VoFR
IP Voice over ATM – IP VoATM
Chapter 8: Service-Provider VoIP Offerings
RBOC VoIP Services
CLEC VoIP Services
Long-Distance Carrier VoIP Services
Cable VoIP Services
Small Service-Provider VoIP Services
Chapter 9: Strategies for Vendors, Regulators, and Customers
The Federal Communications Commission
Interexchange Long-Distance Carriers
Regional Bell Operating Companies
Competitive Local-Exchange Carriers
Service Providers
Enterprise Businesses
Residential Customers
VoIP Hardware and Software Vendors
Chapter 10: Conclusion
Appendix: VoIP Terminals and Other Equipment
IP PBX Components and Prices
IP Phones and Prices
H.323 IP Phones and Prices
SIP–Only Phones
General List of IP Phones and Vendors
Cisco Systems Gateway and Module Component Costs
Avaya Gateway and Module Component Costs
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