what voip and what is the use of voip?

Answer 1

Voice Over IP.

VOIP is a technology that allows voice communication over IP based networks, such as a LAN, WAN or the internet. Vonage or cable based phone services are examples of VOIP.

VOIP can save telecommunication costs because it allows communication over existing lines, and long distance isn't as much of a factor.

In larger scale environments, like corporations, VOIP isn't always cost effective. If the corporation has high network requirements, VOIP could strain the existing infrastructure, and cause problems on the network. To work around that would require either much better network gear, or a parallel IP network. Once you have implemented that, any cost saving by doing VOIP would evaporate.

Answer 2

Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some VoIP services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone connected to a VoIP adapter.

Answer 3

VoIP (Voice over IP)
SIP (Session Initiation Protocol) was initially created to facilitate the transmission of Voice and other data over the internet. SIP is still classed as the correct protocol to use for VoIP BUT a lot of companies use propriatry protocols (their own) to offer VoIP. They do this which makes there software/hardware incompatable with each other so that they can charge for it's use.
There are lots of FREE VoIP software that you can download one of which is Skype BUT this uses its own protocol making it not possable to communicate to someone using say SipGate.
There are free software which use the correct SIP protocol as well.
Most also allow video to be transmitted at the same time. Plus text.
You can usually purchase a telephone number or severl which allow calls to be made from a landline (PSTN) and will connect to your software/hardware anywhere in the world you are logged on.
Calls to landlines in other countries are a lot cheaper as well. This is because you make a free call to a computer server in that country from your computer and then a local landline call is made from that computer to the number.

Answer 4

voip = Voice Over IP (Internet Protocol). Essential, it works the same way as telephone only on your computer and over the internet (dial-up, cable, dsl it doesn't matter what). It's the alternative to actually having a phone plan (programs like skype can call regular phones from your computer!).

Answer 5

voip - voice over internet protocol
this is a kind of protocol with thte help of this you can do a audio / video chat on LAN / WAN like its a telephone with CCD you can talke , you can watch......the cost you pay is of voip enable device and voip port open from isp thats all.....

Answer 6

Voice over Internet Protocol, also called VoIP, IP Telephony, Internet telephony, Broadband telephony, Broadband Phone and Voice over Broadband is the routing of voice conversations over the Internet or through any other IP-based network.

Companies providing VoIP service are commonly referred to as providers, and protocols which are used to carry voice signals over the IP network are commonly referred to as Voice over IP or VoIP protocols. They may be viewed as commercial realizations of the experimental Network Voice Protocol (1973) invented for the ARPANET providers. Some cost savings are due to utilizing a single network - see attached image[1] - to carry voice and data, especially where users have existing underutilized network capacity that can carry VoIP at no additional cost. VoIP to VoIP phone calls are sometimes free, while VoIP to PSTN may have a cost that's borne by the VoIP user.

There are two types of PSTN to VoIP services: DID (Direct Inward Dialing) and access numbers. DID will connect the caller directly to the VoIP user while access numbers require the caller to input the extension number of the VoIP user. Access numbers are usually charged as a local call to the caller and free to the VoIP user while DID usually has a monthly fee.[2] There are also DIDs that are free to the VoIP user but chargeable to the caller.

Functionality

VoIP can facilitate tasks that may be more difficult to achieve using traditional networks:

* Incoming phone calls can be automatically routed to your VoIP phone, regardless of where you are connected to the network. Take your VoIP phone with you on a trip, and wherever you connect to the Internet, you can receive incoming calls.
* Free phone numbers for use with VoIP are available in the USA, UK and other countries from organizations such as VoIP User.
* Call center agents using VoIP phones can work from anywhere with a sufficiently fast and stable Internet connection.
* Many VoIP packages include PSTN features that most telcos (telecommunication companies) normally charge extra for, or may be unavailable from your local telco, such as 3-way calling, call forwarding, automatic redial, and caller ID.

Mobility

VoIP allows users to travel anywhere in the world and still make and receive phone calls:

* Subscribers of phone-line replacement services can make and receive local phone calls regardless of their location. For example, if a user has a New York City phone number and is traveling in Europe and someone calls the phone number, it will ring in Europe. Conversely, if a call is made from Europe to New York City, it will be treated as a local call. Of course, there must be a connection to the Internet e.g. WiFi to make all of this possible.
* Users of Instant Messenger based VoIP services can also travel anywhere in the world and make and receive phone calls.
* VoIP phones can integrate with other services available over the Internet, including video conversation, message or data file exchange in parallel with the conversation, audio conferencing, managing address books and passing information about whether others (e.g. friends or colleagues) are available online to interested parties.

Answer 7

your voice gets digitised and sent across the network.

Class of Service is preferable hence MPLS is more desirable than DSL.

Answer 8

I found lots of good information here.

Answer 9

ask ur teacher . these types of question are not to be asked in these type of places.