What is Voice Over IP?

Hello and Good Morning Everyone,

          I recently added another phone line to my AT&T setup.  The hardware hookups are as follows:  The telephone/copier/fax machine has a direct telephone line connection to the back of the AT&T Gateway at the port labeled Phone Lines 1 & 2.  Then, I have another telephone line running from the Ext port of the  telephone/copier/fax machine  to the chordless phone.  That said, an AT&T agent explained to me that the  telephone/copier/fax machine with the direct connection to the Gateway will get the new activated number and the other phone, chordless one, will retain the old VoIP number.   Given this information, could someone explain what is meant by VoIP or Voice Over IP?  I did not want to bog down my AT&T agent with too many questions.  So, I decided to submit this one for review here.

            Any shared thoughts and explanations in simple terms with respect to the definition and function of VoIP will be greatly appreciated.

            Thank you

            George
GMartinAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Martyn SpencerSoftware Developer / Linux System Administrator / Managing DirectorCommented:
VOIP, Voice Over Internet Protocol is a means of making phone calls on the Internet. You will commonly hear the term SIP mentioned at the same time, which is related to establishing calls and signalling that a line is ringing, for example. Most public telephone networks are moving over to VOIP as a means of connecting their internal networks and ultimately your phone line will also use it, in due course. There are many providers of VOIP services and generally the cost is lower than making calls on the usual public telephone networks.

Often, if you make a call that starts with a VOIP service and terminates with another VOIP service, the call itself is free of charge. This will depend on the provider, naturally.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
CompProbSolvCommented:
I'd modify Martyn's answer slightly.  VoIP is a method of putting voice calls on TCP/IP, not necessarily (though commonly) on the internet.  I've seen uses where VoIP is used internally but connects to a phone controller that gets phone service through a non-VoIP connection (POTs or some other line).
0
Martyn SpencerSoftware Developer / Linux System Administrator / Managing DirectorCommented:
Thanks for the clarification CompProbSolve. I was deliberately using a term that most people would understand rather than making specific mention of TCP/IP, UDP etc.
0
nociSoftware EngineerCommented:
Other protocol besides SIP can be used for signaling (H.323,  Jingle (XMPP), XMPP, MGCP, SKINNY, ) and besides Signalling also RTP (and possible variants) is used to transport the MEDIA (voice, video...).
0
GMartinAuthor Commented:
Hello and Good Evening Everyone,

          Thank you so much for taking the time to address my question.  While I certainly appreciated everyone's feedback, I have to go with Martyn's input because of its simplicity and clarification of technical terms.  

           Thanks again :-)

           George
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Voice Over IP

From novice to tech pro — start learning today.