Introduction to VoIP Protocols

Chapter 1 - VoIP: Do You See What Iím Saying? eBook
By NetQoS

Published 2007, Posted February 2008

 

Abstract:

 

VoIP has a unique set of performance requirements that make it a challenge for any data network. Understanding the operation of core VoIP protocols is a first step in understanding the performance requirements that VoIP places on your network.

 

A VoIP phone call occurs in two stages:

bullet

Call setup. This stage is required to set up everything needed to make the telephone connection between the person making the call (the caller) and the person receiving the call (the called party).

bullet

The call itself. The audio conversation needs to be encoded and transmitted across the network.

 

The hardware required to make a VoIP phone call varies by vendor, but there are several common components that you will see on your network. Letís discuss some of these devices and terminology before diving into the protocols that they use to communicate.

 

Do you know this already? Many of you may have already deployed VoIP and are working with it every day. If you already have a good grasp on the basic components and protocols, you may want to skip to ahead to VoIP and Network Performance on page 13.

 

bullet

Download paper
bullet

Approx. 557 kB

bullet

Click here for help with .pdf downloads.

bullet

Return to Voice over Packet Webtorials menu

bullet

Return to Communications 101 Webtorials menu

bullet

Return to NetQoS Gold Sponsors' Briefing

 

Please note: By downloading this information, you acknowledge that the sponsor(s) of this information may contact you, providing that they give you the option of opting out of further communications from them concerning this information.  Also, by your downloading this information, you agree that the information is for your personal use only and that this information may not be retransmitted to others or reposted on another web site.  Please encourage colleagues to download their own copy after registering at http://www.webtorials.com/reg/.