ZyXEL P-2802HWL-I1 User Guide - Page 38
Wireless LAN Application, Making Calls via Internet Telephony Service Provider
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Chapter 1 Introducing the ZyXEL Device Use content filtering to block access to web sites containing keywords that you specify. You can define time periods and days during which content filtering is enabled and include or exclude particular computers on your network from content filtering. For example, you could block access to certain web sites for the kids. Use QoS to efficiently manage traffic on your network by giving priority to certain types of traffic and/or to particular computers. For example, you could make sure that voice over Internet calls get enough bandwidth in your network, and/or limit bandwidth devoted to the boss's excessive file downloading. 1.4.2 Wireless LAN Application Add a wireless LAN to your existing network without expensive network cables. Wireless clients can move freely anywhere in the coverage area and use resources on the wired network. Figure 2 WLAN Application Example 1.4.3 Making Calls via Internet Telephony Service Provider In a home or small office environment, you can use your device to make and receive VoIP telephone calls through an Internet Telephony Service Provider (ITSP). The following figure shows a basic example of how you would make a VoIP call through an ITSP. You use your analog phone (A in the figure) and your device (B) changes the call into VoIP. Your device then sends your call to the Internet and the ITSP's SIP server (C). The VoIP call server forwards calls to PSTN phones (E) through a trunking gateway (D) to the PSTN network. The VoIP call server forwards calls to IP phones (F) through the Internet. 38 P-2802H(W)(L)-I Series User's Guide