ZyXEL Communications P-2304R, Руководство пользователя

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Chapter 1 Introducing the ZyXEL Device
P-2304R-P1 Series User’s Guide
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Figure 2 VoIP Service Provider Application
1.5.2 Make Calls via IP-PBX
If your company has an IP-PBX (Internet Protocol Private Branch Exchange), you can use the
ZyXEL Device to make and receive VoIP telephone calls through it.
In this example, you use your analog phone (
A in the figure) and the ZyXEL Device ( B )
changes the call into VoIP and sends it to the IP-PBX. For PSTN phones ( C ), the IP-PBX
forwards calls through the PSTN network. For IP phones ( D ), the IP-PBX forwards calls
through an IP network (this could include the Internet).
Figure 3 IP-PBX Application