User's Manual

Table Of Contents
Administrator’s Handbook
56
Voice
If you click the Voice ink, the Voice page appears.
Voice-over-IP (VoIP) refers to the ability to make voice telephone calls over the Internet. This differs from tradi-
tional phone calls that use the Public Switched Telephone Network (PSTN). VoIP calls use an Internet protocol,
Session Initiation Protocol (SIP), to transmit sound over a network or the Internet in the form of data packets.
The Voice page displays information about your VoIP phone lines, if configured. Your Gateway supports two
phones, Line 1 and Line 2.
If either one or both are registered with a SIP server by your service provider or not registered, the Voice page
will display their Registration Details.
The links at the top of the Voice page access a series of pages to allow you to configure and monitor
features of your device. The following sections give brief descriptions of these pages.
“Line Details” on page 57
“Call Statistics” on page 58