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Prestige 2602R Series User’s Guide
Chapter 7 Introduction to VoIP
103
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H A P T E R
7
Introduction to VoIP
This chapter provides background information on VoIP and SIP.
7.1 Introduction to VoIP
VoIP is the sending of voice signals over the Internet Protocol. This allows you to make phone
calls and send faxes over the Internet at a fraction of the cost of using the traditional circuit-
switched telephone network. You can also use servers to run telephone service applications
like PBX services and voice mail. Internet Telephony Service Provider (ITSP) companies
provide VoIP service.
Circuit-switched telephone networks require 64 kilobits per second (Kbps) in each direction to
handle a telephone call. VoIP can use advanced voice coding techniques with compression to
reduce the required bandwidth.
7.2 SIP
The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol that
handles the setting up, altering and tearing down of voice and multimedia sessions over the
Internet.
SIP signaling is separate from the media for which it handles sessions. The media that is
exchanged during the session can use a different path from that of the signaling. SIP handles
telephone calls and can interface with traditional circuit-switched telephone networks.
7.2.1 SIP Identities
A SIP account uses an identity (sometimes referred to as a SIP address). A complete SIP
identity is called a SIP URI (Uniform Resource Identifier). A SIP account's URI identifies the
SIP account in a way similar to the way an e-mail address identifies an e-mail account. The
format of a SIP identity is SIP-Number@SIP-Service-Domain.
7.2.1.1 SIP Number
The SIP number is the part of the SIP URI that comes before the “@” symbol. A SIP number
can use letters like in an e-mail address ([email protected] for example) or numbers
like a telephone number ([email protected] for example).
Содержание Prestige 2602R Series
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Страница 23: ...Prestige 2602R Series User s Guide Table of Contents 23 Index 439...
Страница 24: ...Prestige 2602R Series User s Guide 24 Table of Contents...
Страница 32: ...Prestige 2602R Series User s Guide 32 List of Figures...
Страница 40: ...Prestige 2602R Series User s Guide 40 Introduction to DSL...
Страница 50: ...Prestige 2602R Series User s Guide 50 Chapter 1 Getting To Know Your Prestige...
Страница 56: ...Prestige 2602R Series User s Guide 56 Chapter 2 Introducing the Web Configurator...
Страница 90: ...Prestige 2602R Series User s Guide 90 Chapter 5 WAN Setup...
Страница 102: ...Prestige 2602R Series User s Guide 102 Chapter 6 Network Address Translation NAT Screens...
Страница 134: ...Prestige 2602R Series User s Guide 134 Chapter 11 Time and Date...
Страница 148: ...Prestige 2602R Series User s Guide 148 Chapter 12 Firewalls...
Страница 170: ...Prestige 2602R Series User s Guide 170 Chapter 13 Firewall Configuration...
Страница 178: ...Prestige 2602R Series User s Guide 178 Chapter 15 Remote Management Configuration...
Страница 192: ...Prestige 2602R Series User s Guide 192 Chapter 16 Universal Plug and Play UPnP...
Страница 214: ...Prestige 2602R Series User s Guide 214 Chapter 19 Maintenance Figure 104 System Status...
Страница 224: ...Prestige 2602R Series User s Guide 224 Chapter 19 Maintenance...
Страница 234: ...Prestige 2602R Series User s Guide 234 Chapter 21 Menu 1 General Setup...
Страница 238: ...Prestige 2602R Series User s Guide 238 Chapter 22 Menu 2 WAN Backup Setup...
Страница 242: ...Prestige 2602R Series User s Guide 242 Chapter 23 Menu 3 LAN Setup...
Страница 248: ...Prestige 2602R Series User s Guide 248 Chapter 24 Internet Access...
Страница 262: ...Prestige 2602R Series User s Guide 262 Chapter 26 Static Route Setup...
Страница 266: ...Prestige 2602R Series User s Guide 266 Chapter 27 Bridging Setup...
Страница 282: ...Prestige 2602R Series User s Guide 282 Chapter 28 Network Address Translation NAT...
Страница 312: ...Prestige 2602R Series User s Guide 312 Chapter 32 System Information and Diagnosis...
Страница 324: ...Prestige 2602R Series User s Guide 324 Chapter 33 Firmware and Configuration File Maintenance...
Страница 330: ...Prestige 2602R Series User s Guide 330 Chapter 34 System Maintenance...
Страница 334: ...Prestige 2602R Series User s Guide 334 Chapter 35 Remote Management...
Страница 346: ...Prestige 2602R Series User s Guide 346 Chapter 37 Call Scheduling...
Страница 358: ...Prestige 2602R Series User s Guide 358 Chapter 38 Troubleshooting...
Страница 388: ...Prestige 2602R Series User s Guide 388 Appendix D IP Subnetting...
Страница 392: ...Prestige 2602R Series User s Guide 392 Appendix E Triangle Route...
Страница 394: ...Prestige 2602R Series User s Guide 394 Appendix F SIP Passthrough...
Страница 420: ...Prestige 2602R Series User s Guide 420 Appendix G Internal SPTGEN...
Страница 422: ...Prestige 2602R Series User s Guide 422 Appendix H Command Interpreter...
Страница 424: ...Prestige 2602R Series User s Guide 424 Appendix I Firewall Commands...
Страница 438: ...Prestige 2602R Series User s Guide 438 Appendix K Log Descriptions...