NQA Technology White Paper

 

Keywords: NQA, test, probe, collaboration, scheduling

Abstract: Network Quality Analyzer (NQA) is a network performance probe and statistics technology used to collect statistics on the network information such as response time, jitter, and packet loss rate. NQA also provides the collaboration between the track module and the application modules to monitor network status change in real time. This manual introduces the basic concepts first, and then introduces the mechanism, technical characteristics and application scenarios of NQA in detail.

Acronyms:

Acronym

Full spelling

DHCP

Dynamic Host Configuration Protocol

DLSw

Data Link Switching

DNS

Domain Name System

FTP

File Transfer Protocol

HTTP

Hypertext Transfer Protocol

ICMP

Internet Control Message Protocol

ICPIF

Calculated Planning Impairment Factor

MOS

Mean Opinion Scores

NQA

Network Quality Analyzer

SNMP

Simple Network Management Protocol

TCP

Transmission Control Protocol

UDP

User Datagram Protocol

VoIP

Voice over IP

 

 

 



Overview

Background

With the fast development of the Internet, it supports more and more services and applications. Traditional network performance analysis tools such as ping and tracert cannot satisfy users’ requirements on service diversity and real-time monitoring of the network.

Network Quality Analyzer (NQA) analyzes network performance and service quality by sending test packets, providing you with network performance parameters such as jitter, total delay of HTTP, delay for obtaining an IP address through DHCP, TCP connection delay, FTP connection delay and file transfer rate. With the NQA test results, you can:

l          Know network performance in time and then take corresponding measures.

l          Diagnose and locate network faults.

NQA also provides the collaboration between the track module and the application modules to monitor network status change in real time, and then take corresponding actions, thus avoiding communication interruption or service quality decrease.

Benefits

NQA has the following benefits:

l    &nb