D-Link DVG-3004S User Manual
3
1. Start Up
1.1 Introduction
The DVG-3004S provides voice service over IP network with SIP protocol.
By connecting to your existing ADSL or cable modem service, which
allows the use of a single, network for voice and fax services with
consequent saving in network infrastructure and greatly reduced
telephone charges. Ideal solution for providing low cost communications
between headquarters and branch offices in the world, as well as for
SOHO and office telephony applications.
DVG-3004S provides analog lines to connect local PSTN/PTT interface
(FXO), and converts voice/fax signal onto IP network. The management
feature is via RS-232C COM port and TELNET.
Application Architecture
FXO
IP
Network
PBX
FXS
FXO
FXO
PBX
Extension
Extension port
IP
Network
IP
Network
FXO
FXO
FXO
FXO
PBX
PBX
FXO ports can connect with PSTN Line or Extension Line of PBX