|
What Is VoIP?
VoIP
Voice
over Internet Protocol (VoIP) is the family of technologies that allow
IP networks to be used for voice applications, such as telephony, voice
instant messaging, and teleconferencing. VoIP entails solutions at
almost every layer of an IP network--from specialized voice
applications (like Skype) all the way down to low-level quality
measures that keep those applications running smoothly.
Unless you have been sleeping under a very big rock for the last year,
you have certainly heard the phrase "Voice over IP" uttered. Perhaps
you
have seen those hilarious Vonage commercials that feature painful and
embarrassing accidents caught on tape, promising to let you dump your
local phone company in order save big on your phone bill. You may also
have seen the Cisco telephones that are curiously inserted in
prime-time shows like 24.
What is all the hubbub about, anyway? Why, VoIP, of course! VoIP, the
fabulous secret ingredient in Vonage, Skype, Cisco CallManager, and a
host of other revolutionary technology products you may have already
encountered on TV, in the news, or in person. But what makes these
products so revolutionary? What is it about VoIP that is such a big
deal?
The
VoIP Technology
Voice
over Internet Protocol is a family of technologies that enable voice
communications using IP networks like the internet. Inventive
developers and entrepreneurs have created an industry around VoIP
technology in its many forms: desktop applications, telephone services,
and corporate phone systems. VoIP is a core technology that drives
everything from voice-chat software loaded on a desktop PC to Mac
full-blown IP-based telecommunications networks in large corporations.
To the Wall Street speculator, VoIP is a single technology investment
with many revenue streams. To the enterprise network engineer, it is a
way to simplify the corporate network and improve the telephony
experience for users of the network. To the home user, it is a really
cool way to save money on the old phone bill.
But how? What makes VoIP do all this awesome stuff? Read on.
Why VoIP Now?
The concept
is not actually that new: VoIP has been touted as a long-distance
killer since the later 1990s, when goofy PC products like Internet
Phone were starting to show up. But the promise of Voice over IP was
lost in the shuffle of buggy applications and the slow-to-start
broadband revolution. Without broadband connections, VoIP really is not
worthwhile. So early adopters of personal VoIP software like CUSeeMe
and NetMeeting were sometimes frustrated by bad sound quality, and the
first generation of VoIP products ultimately failed in the marketplace.
Fast
forward to Fall 2005. Suddenly, everybody is talking about VoIP again.
Why? There may be no greater reason than the sudden success of a
freeware VoIP chat program called Skype.
VoIP-Based Services
By now you have probably
seen ads for companies like Vonage and Packet8. These services promise
ultra-cheap voice calling service via your broadband internet
connection. Some offer calling packages as low as €9.99 per
month. Their secret weapon is VoIP. Voice over IP service providers use
the internet to carry voice signals from their networks to your home
phone. Because VoIP telecommunication isn not regulated the way
traditional phone line telecommunication is, VoIP providers like Vonage
can offer drastically lower calling rates.
The catch? You have got
to
put up with the occasional hiccup in your voice service, caused by the
one thing legacy telephone technology has built-in that VoIP does not:
guaranteed quality. Because VoIP uses packets to transmit data like
other services on the internet, it cannot provide the quality
guarantees of old-fashioned, non-packet-based telephone lines. But this
is changing, too. Efforts are underway on all fronts (service
providers, Internet providers, and VoIP solution makers) to adapt
quality-of-service techniques to VoIP services, so that one day, your
VoIP calls may sound as good as (or better than) your regular land-line
calls.
Today, if you want to build a fully quality-enabled private VoIP
network, you can. Cisco, Foundry Networks, Nortel, and other network
equipment makers all support common quality-of-service standards,
meaning corporate networks are only an upgrade away from effective
convergence of voice and data.
But it will be quite some time before the internet itself is
quality-enabled. Indeed, the internet may never be fully
quality-enabled. This hasn not stopped enterprising network gearheads
like me from trying to connect calls over the internet, of course. Hey,
if Skype works so well, why cant corporate phone calls? Enterprise
phone administrators have found that it is actually very easy to equip
mobile users with VoIP phones to place calls on the company phone
system by connecting to it over the internet--from hotel rooms or home
offices--but the quality of these calls is sort of hit or miss, like a
cell phone when you drive through a "dead zone" in
What Are Some of the Advantages of VoIP?
Some VoIP services offer
features and services that are not available with a traditional phone,
or are available but only for an additional fee. You may also be able
to avoid paying for both a broadband connection and a traditional
telephone line.
Whats Next for VoIP?
A host of brand new,
VoIP-enabled cell phones will soon be ready for action. Imagine driving
to work, receiving a call on your cell phone from a client, and then
continuing that call on the corporate Wi-Fi network as you walk into
the front office. all without any interruption to your
call-in-progress. The cell network will just "hand off" the call to
your Wi-Fi network. This sort of technology exists today, and will be a
commonplace feature of corporate phone systems in years to come.
Cost savings, uber-slick telephony features, network convergence--VoIP
is the technology at the root of all these trends, and you should
expect to see a lot more news about VoIP in the coming months and
years. If you haven not used Voice over IP products yet, try out a
broadband phone service like Broadvox Direct or Vonage, and download a
copy of Skype or the Gizmo Project, two excellent VoIP PC calling
applications
Contact
VoIP4u.ie we are here to help
Tel 1: +353 (0)16853526 - ( Mon - Fri / 09.00am -
17.00pm)
Email:
info@voip4u.ie - ( Mon - Fri / 09.00am -
17.00pm)
Please
note calls maybe recorded
|