Make Peer-To-Peer Calls; Figure 4 Peer-To-Peer Calling - ZyXEL Communications P-2304R-P1 Series User Manual

1.5.3 Make Peer-to-peer Calls

Use the ZyXEL Device to make a call to the recipient'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 the ZyXEL Device (B) changes the call into
VoIP. The ZyXEL Device then sends your call through the Internet to the peer VoIP device
(C).

Figure 4 Peer-to-peer Calling

P-2304R-P1 Series User's Guide
Chapter 1 Introducing the ZyXEL Device
31