User manual ZYXEL P-2302HW-P1

[. . . ] P-2302HW/HWL-P1 Series 802. 11b/g Wireless VoIP Station Gateway User's Guide Version 3. 60 Edition 1 9/2006 P-2302HW/HWL-P1 Series User's Guide Copyright Copyright © 2006 by ZyXEL Communications Corporation. The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. [. . . ] To select a range of ports, · enter the port number at the beginning of the range in the Start Port field · enter the port number at the end of the range in the End Port field. If you want to delete this rule, enter zero in the Start Port and End Port fields. You can use 1 - 15 printable ASCII characters, or you can leave this field blank. It does not have to be a unique name. Trigger Start Port End Port Chapter 8 NAT 133 P-2302HW/HWL-P1 Series User's Guide Table 57 Network > NAT > Trigger Port LABEL Apply Cancel DESCRIPTION Click this to save your changes and to apply them to the ZyXEL Device. Click this to discard your changes. 8. 2. 5 NAT ALG Screen Use this screen to enable and disable SIP (VoIP), FTP (file transfer), and H. 323 (audio-visual) ALG in the ZyXEL Device. To access this screen, click Network > NAT > ALG. Figure 70 Network > NAT > ALG Each field is described in the following table. Table 58 Network > NAT > ALG LABEL Enable SIP ALG Enable FTP ALG DESCRIPTION Select this to make sure SIP (VoIP) works correctly with port-forwarding and porttriggering rules. Select this to make sure FTP (file transfer) works correctly with port-forwarding and port-triggering rules. Enable H. 323 ALG Select this to make sure H. 323 (audio-visual programs, such as NetMeeting) works correctly with port-forwarding and port-triggering rules. Apply Cancel Click this to save your changes and to apply them to the ZyXEL Device. Click this to discard your most recent changes. 134 Chapter 8 NAT P-2302HW/HWL-P1 Series User's Guide CHAPTER 9 SIP Use these screens to set up your SIP accounts and to configure QoS settings. 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). Chapter 9 SIP 135 P-2302HW/HWL-P1 Series User's Guide 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. [. . . ] The IPSEC ESP (Encapsulation Security Protocol) tunneling protocol uses this service. Finger is a UNIX or Internet related command that can be used to find out if a user is logged on. File Transfer Program, a program to enable fast transfer of files, including large files that may not be possible by e-mail. NetMeeting uses this protocol. ESP (IPSEC_TUNNEL) FINGER User-Defined 50 TCP 79 FTP TCP TCP TCP 20 21 1720 H. 323 Appendix F Services 323 P-2302HW/HWL-P1 Series User's Guide Table 161 Examples of Services (continued) NAME HTTP HTTPS ICMP ICQ IGMP (MULTICAST) PROTOCOL TCP TCP User-Defined UDP User-Defined PORT(S) 80 443 1 4000 2 DESCRIPTION Hyper Text Transfer Protocol - a client/ server protocol for the world wide web. [. . . ]