Zyxel-communications P-2602HW(L) Series Manual do Utilizador descarregar pdf (Página 45)

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P-2602H(W)(L)-DxA Series User’s Guide

Chapter 1 Getting To Know the ZyXEL Device 45

Figure 2 Internet Telephony Service Provider Application

1.4.3 Make Peer-to-peer Calls

You can call directly to someone’s IP address without using a SIP proxy server. Peer-to-peer

calls are also called “Point to Point” or “IP-to-IP” calls. You must know the peer’s IP address

in order to do this.

The following figure shows a basic example of how you would make a peer-to-peer VoIP call.

You use your analog phone (A in the figure) and your device (B) changes the call into VoIP.

and sends the call through the Internet to the peer VoIP device (C).

Figure 3 Peer-to-peer Calling

1.4.4 Firewall for Secure Broadband Internet Access

Your device provides protection from attacks by Internet hackers. By default, the firewall

blocks all incoming traffic from the WAN. The firewall supports TCP/UDP inspection and

DoS (Denial of Services) detection and prevention, as well as real time alerts, reports and logs.

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