P-2302R Series User’s Guide

The following figure shows a basic example of how you would make a VoIP call through an ITSP. You use your analog phone (A in the figure) and the Prestige (B) changes the call into VoIP. The Prestige then sends your call through your modem or router (C) to the Internet and the ITSP’s SIP server (D). The VoIP call server forwards calls to PSTN phones (F) through a trunking gateway (E) to the PSTN network. The VoIP call server forwards calls to IP phones

(G) through the Internet.

Figure 2 Internet Telephony 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 Prestige to make and receive VoIP telephone calls through it.

In this example, you use your analog phone (A in the figure) and the Prestige (B) changes the call into VoIP and sends it to the IP-PBX. The IP-PBX forwards calls to PSTN phones (C) to the PSTN network. The IP-PBX forwards calls to IP phones (D) through an IP network (this could include the Internet).

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Chapter 1 Introducing the Prestige