beautypg.com

2 make calls via ip-pbx, 3 make peer-to-peer calls, Figure 2 ip-pbx application – ZyXEL Communications V501-T1 User Manual

Page 33: Figure 3 peer-to-peer calling

background image

Chapter 1 Introduction

V500 Series User’s Guide

33

1.2.2 Make Calls via IP-PBX

If your company has an IP-PBX (Internet Protocol Private Branch Exchange), you can use the
V500 to make and receive VoIP telephone calls through it.

In this example, you make a call from your V500 (A in the figure), which sends it to the IP-
PBX. The IP-PBX forwards calls to PSTN phones (B) on the PSTN network. The IP-PBX also
forwards calls to IP phones (C) through an IP network (this could include the Internet).

Figure 2 IP-PBX Application

1.2.3 Make Peer-to-peer Calls

Use the V500 to make a call to the recipient’s IP address without using a SIP 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 make a call on your V500 (A), which sends your call through your modem or router (B)
and the Internet to the peer VoIP device (C).

Figure 3 Peer-to-peer Calling