ZyXEL Communications MAX-200M1 Series, Руководство пользователя

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ZyXEL MAX-200M1 Series User’s Guide
30 Chapter 1 Getting Started
Figure 1 Mobile Station and Base Station
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.
Use content filtering to block access to web sites with URLs 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.
1.1.2 Make Calls via Internet Telephony Service Provider
In a home or small office environment, you can use the ZyXEL Device to make and receive
the following types of VoIP telephone calls:
• Peer-to-Peer calls ( A ) - Use the ZyXEL Device to make a call to the recipient’s IP address
without using a SIP proxy server.
• Calls via a VoIP service provider ( B ) - The ZyXEL Device sends your call to a VoIP
service provider’s SIP server which forwards your calls to either VoIP or PSTN phones.
Figure 2 ZyXEL Device’s VoIP Features