ZyXEL FSG2200HNU User Guide - Page 22
VoIP Features,
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Chapter 1 Introducing the ZyXEL Device Computers can connect to the ZyXEL Device's LAN ports (or wirelessly). Figure 1 ZyXEL Device's Internet Access Application LAN WAN IPoE PPPoE WAN Fiber You can also configure firewall on the ZyXEL Device for secure Internet access. When the firewall is on, all incoming traffic from the Internet to your network is blocked unless it is initiated from your network. This means that probes from the outside to your network are not allowed, but you can safely browse the Internet and download files. Use egress queuing and policy routing to efficiently manage traffic on your network by giving priority to certain types of services, traffic and/or to particular computers. For example, you could make sure that the ZyXEL Device gives voice over Internet calls high priority, and/or limit bandwidth devoted to excessive file downloading. 1.2.2 VoIP Features You can register up to 2 SIP (Session Initiation Protocol) accounts and use the ZyXEL Device to make and receive VoIP telephone calls: Figure 2 ZyXEL Device's VoIP Application Fiber PSTN The ZyXEL Device sends your call to a VoIP service provider's SIP server which forwards your calls to either VoIP or PSTN phones. 22 FSG2200HNU User's Guide