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Chapter 16 VoIP
P-2601HN(L)-F1 Series User’s Guide
192
16.9.2 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.
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.
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).
SIP Service Domain
The SIP service domain of the VoIP service provider is the domain name in a SIP
URI. For example, if the SIP address is
, then
“VoIP-provider.com” is the SIP service domain.
SIP Registration
Each ZyXEL Device is an individual SIP User Agent (UA). To provide voice service,
it has a public IP address for SIP and RTP protocols to communicate with other
servers.
A SIP user agent has to register with the SIP registrar and must provide
information about the users it represents, as well as its current IP address (for the
routing of incoming SIP requests). After successful registration, the SIP server
knows that the users (identified by their dedicated SIP URIs) are represented by
the UA, and knows the IP address to which the SIP requests and responses should
be sent.
Summary of Contents for P-2601HN(L)-F1 Series
Page 2: ......
Page 8: ...Safety Warnings P 2601HN L F1 Series User s Guide 8 ...
Page 10: ...Contents Overview P 2601HN L F1 Series User s Guide 10 ...
Page 19: ...19 PART I User s Guide ...
Page 20: ...20 ...
Page 59: ...59 PART II Technical Reference ...
Page 60: ...60 ...
Page 110: ...Chapter 6 Wireless P 2601HN L F1 Series User s Guide 110 ...
Page 130: ...Chapter 8 Routing P 2601HN L F1 Series User s Guide 130 ...
Page 134: ...Chapter 9 DNS Route P 2601HN L F1 Series User s Guide 134 ...
Page 178: ...Chapter 16 VoIP P 2601HN L F1 Series User s Guide 178 Figure 81 VoIP SIP SIP Service Provider ...
Page 202: ...Chapter 16 VoIP P 2601HN L F1 Series User s Guide 202 ...
Page 206: ...Chapter 17 Logs P 2601HN L F1 Series User s Guide 206 ...
Page 212: ...Chapter 18 System Monitor P 2601HN L F1 Series User s Guide 212 ...
Page 220: ...Chapter 21 SNMP P 2601HN L F1 Series User s Guide 220 ...
Page 232: ...Chapter 26 Backup Restore P 2601HN L F1 Series User s Guide 232 ...
Page 290: ...Appendix B Setting Up Your Computer s IP Address P 2601HN L F1 Series User s Guide 290 ...
Page 322: ...Appendix D Wireless LANs P 2601HN L F1 Series User s Guide 322 ...
Page 332: ...Appendix F Open Software Announcements P 2601HN L F1 Series User s Guide 332 ...
Page 344: ...Index P 2601HN L F1 Series User s Guide 344 ...