ZyXEL Communications P-2302HWL-P1 Series - Manual (Page 38)

P-2302HW/HWL-P1 Series User’s Guide
38 Chapter 1 Introducing the ZyXEL Device
1.1.2 VoIP Trunking Gateway
VoIP trunking allows you to use your ZyXEL Device as a gateway between VoIP and PSTN
networks.
Figure 2 ZyXEL Device as a VoIP Trunking Gateway
In this example, you use your analog phone (A) to call the ZyXEL Device (B). The ZyXEL
Device changes the call into VoIP and sends it via the Internet to another VoIP phone(C).
1.1.3 ZyXEL Device’s Router Features
Your ZyXEL Device provides shared Internet access through your existing Internet access
gateway
(company network, or your cable or DSL modem for example). Computers can
connect to the ZyXEL Device’s LAN ports (or wirelessly).
Figure 3 ZyXEL Device’s Router Features
You can also configure firewall and content filtering 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.