Introduction; Product Overview - D-Link DVG-7022S User Manual

DVG-7022S/7044S/7062 User's Manual Produect Overview

1. Introduction

1-1 Product Overview

The DVG-7022S/7044S/7062S VoIP Gateway carries both voice and facsimile over the IP network. It uses the
industry standard SIP call control protocol so as to be compatible with free registration services or VoIP service
providers' systems. As a standard user agent, it is compatible with all common Soft Switches and SIP proxy
servers. While running optional server software, the gateway can be configured to establish a private VoIP
network over the Internet without a third-party SIP Proxy Server.
The gateway can be seamlessly integrated into an existing network by connecting to a phone set and fax
machine. With only a broadband connection such as an ADSL bridge/router, a Cable Modem or a leased-line
router, the gateway allows you to use voice and fax services over IP in order to reduce the cost of all long distance
calls.
DDNS support makes the gateway reachable via its domain name where an ISP dynamically assigns an IP
address. By enabling the CDR function, administrators are allowed to log-in and view all call records, for example
call duration, time and date of calls, and latency.
The gateway can be assigned a fixed IP address or it can have one dynamically assigned by DHCP over PPPoE.
It adopts either the G.711, G.726, G.729A or G.723.1 voice compression format to save network bandwidth while
providing real-time, toll quality voice transmission and reception.
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D-Link Systems, Inc.