Chapter 1: Vcx V7111 Sip Overview; Gateway Description - 3Com V7111 - VCX 4 Channels Analog FXO Media Gateway User Manual

C 1: VCX V7111 SIP O
HAPTER VERVIEW
This document provides you with the information about installation, configuration, and
operation of the VCX 7111 24FXS, 8FXS, 8FXO, 4FXS, 4FXO, and 2FXS VoIP Gateways.
As these units have similar functionality, except for the number of channels and some minor
features. It is expected that the readers are familiar with regular telephony and data
networking concepts.

Gateway Description

The VCX V7111 telephony Gateways provide excellent voice quality and optimized packet
voice streaming over IP networks. The product enables voice, fax, and data traffic to be sent
over the same IP network. It is based on the award-winning, field-proven TrunkPack design
and uses well-established DSP voice compression technology.
The VCX V7111 incorporates up to 24 analog ports for connection, either directly to an
enterprise PBX (VCX V7111 FXO), to phones, or to fax (VCX V7111 FXS), supporting up to
24 simultaneous VoIP calls.
Additionally, the VCX V7111 Gateways are equipped with a 10/100 Base-T Ethernet port for
connection to the LAN.
The VCX V7111 Gateways are best suited for small to medium size enterprises, branch
offices or for residential Gateway solutions.
The VCX V7111 Gateways enable you to make free local or international telephone and fax
calls between the distributed company offices, using their existing telephones/fax. These
calls are routed over the existing IP Internet or Intranet corporate data networks ensuring
that voice traffic takes the minimum of space on the data network.
The VCX V7111 Gateways are very compact devices, designed to be installed either as a
desktop unit (see Figure 2) or installed in a 19-inch rack (see Figure 6 on page 20).
The VCX V7111 supports the SIP protocol, enabling the deployment of voice over packet
solutions in environments where each enterprise or residential location is provided with a
simple Gateway.
This provides the enterprise with a telephone connection (for example, RJ-11), and can
transmit the voice and telephony signals over a packet network.
Additionally, for emergency use, the VCX V7111 FXS Gateway provides a Life Line,
connected to the unused pins on port 4 (or port 2 for the 2FXS), with a relay to an analog
line, even if the Gateway is powered off.
3Com VCX V7111 VoIP SIP Gateways User Manual 13