Part Ii Part 2: Voip Manual; General Information - NEC UNIVERGE SV9100 Manual

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the connection monopolise much less bandwidth.
VBR
Variable bit rate. QoS class defined by the ATM Forum for ATM networks. VBR is subdivided into a
real time (RT) class and non-real time (NRT) class. VBR (RT) is used for connections in which there
is a fixed timing relationship between samples. VBR (NRT) is used for connections in which there is
no fixed timing relationship between samples, but that still need a guaranteed QoS.
Note:
Not all items above are described in this manual.
2 Part 2: VoIP Manual

General Information

2.1 General Information
General Information
Introduction
The UNIVERGE SV9100 system uses IP for various applications.
This section describes the procedure for connecting the UNIVERGE SV9100 system to an existing data
network and configuring TCP/IP. This is the first step in implementing VoIP and other IP applications.
Network Addressing Overview
Before connecting the system to a data network, it is necessary to ob tain the relevant IP Addressing
information. This information is supplied b y the IT Manager or Network Administrator at the customer site.
IP Addressing
All equipment/devices used in the LAN setup must have an IP address assignment. An IP address
assigns a unique address for each device. There are two types of IP addresses: Private and Global. A
Private IP address is not accessible through the internet; a Global IP address can be accessed through the
internet.
In most cases, a Private address is used, as LAN devices are not usually directly connected to the internet.
Private addresses are usually taken from the following ranges: