http://iet.metastore.ingenta.com
1887

What exactly is VoIP?

What exactly is VoIP?

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Communications Engineer — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Voice over Internet Protocol (or VoIP) is on the verge of revolutionising the telecommunications industry. It is a totally new way of carrying voice traffic, and one that telecommunications companies will have no choice but to fully embrace if they are to remain competitive. Until recently, all voice traffic has been carried using what is called circuit switched technology in which a physical circuit is switched to provide a call for a user. The radically new approach owes much to the overwhelming success of the Internet, which paved the way for the adoption of packet data communications based on Internet Protocol (IP). The concept of voice over IP is quite straightforward. An endpoint - which may be a VoIP phone or a computer - consists of a few blocks. A vocoder converts the analogue audio to and from a digital format. The data generated is split into packets and sent, with the relevant protocol, into the outside world via a network interface card. Signalling and call control are also applied through this card. The article outlines the the basic operation of VoIP.

http://iet.metastore.ingenta.com/content/journals/10.1049/ce_20050209
Loading

Related content

content/journals/10.1049/ce_20050209
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address