User manual ZYXEL P-2302HWUDL-P1

[. . . ] P-2302HWUDL-P1 Series 802. 11g Wireless VoIP Station Gateway with Built-in DECT Base Station User's Guide Version 3. 60 3/2007 Edition 2 www. zyxel. com About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the ZyXEL Device using the web configurator. You should have at least a basic knowledge of TCP/IP networking concepts and topology. Related Documentation · Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. [. . . ] Select this to make sure FTP (file transfer) works correctly with port-forwarding and port-triggering rules. Select this to make sure H. 323 (audio-visual programs, such as NetMeeting) works correctly with port-forwarding and port-triggering rules. Click this to save your changes and to apply them to the ZyXEL Device. Click this to discard your most recent changes. P-2302HWUDL-P1 Series User's Guide 129 Chapter 8 NAT 130 P-2302HWUDL-P1 Series User's Guide PART III VoIP SIP (133) Phone (147) Phone Book (163) PSTN Line (167) VoIP Trunking (169) 131 132 CHAPTER Use these screens to set up your SIP accounts and to configure QoS settings. 9 SIP 9. 1 SIP Overview 9. 1. 1 Introduction to VoIP VoIP (Voice over IP) 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. A company could alternatively set up an IP-PBX and provide it's own 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. 9. 1. 2 Introduction to 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. 9. 1. 3 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. 9. 1. 3. 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 (johndoe@your-ITSP. com for example) or numbers like a telephone number (1122334455@VoIP-provider. com for example). P-2302HWUDL-P1 Series User's Guide 133 Chapter 9 SIP 9. 1. 3. 2 SIP Service Domain The SIP service domain of the VoIP service provider (the company that lets you make phone calls over the Internet) is the domain name in a SIP URI. For example, if the SIP address is 1122334455@VoIP-provider. com, then "VoIP-provider. com" is the SIP service domain. 9. 1. 4 SIP Call Progression The following figure displays the basic steps in the setup and tear down of a SIP call. A calls B. Table 60 SIP Call Progression A 1. OK B 1 A sends a SIP INVITE request to B. This message is an invitation for B to participate in a SIP telephone call. [. . . ] This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. Viewing Certifications 1 Go to http://www. zyxel. com. 2 Select your product on the ZyXEL home page to go to that product's page. 352 P-2302HWUDL-P1 Series User's Guide Appendix H Legal Information 3 Select the certification you wish to view from this page. ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two years from the date of purchase. [. . . ]