VoIP in mobiles
VELTECH MULTITECH DR Rangarajan DR Sakunthala
Dept of INFORMATION TECHNOLOGY , BTECH 1st
Voice over Internet Protocol (VoIP) is
the technology used to transmit
conversations digitally over the
This presentation describes VoIP and
how it compares to traditional phone
systems, the standards organizations
promoting the technology, and what
this means for you now and in the
What is VoIP ?
How does it work?
Basic VoIP setup
Ways of using VoIP
What is VoIP…….?
Voice over Internet Protocol
(VoIP) is an emerging set of
applications which allows you to
make telephone calls over the
VoIP is a great money saver for
both businesses and residential
VoIP equipment includes a
broadband modem and an ATA
(Analog Telephone Adapter) or IP
Surprisingly the same as most
mobile phones today…!
Take your analogue voice and
digitises it and then send it via a
carrier.. Mobile phones use GSM
and VOIP uses IP network.. Hence
Voice Over IP.
So instead of the phone breaking up
your voice and sending it over the
air, VOIP breaks it up and sends it
over the internet.
So if you can use a mobile you can use
VOIP.. As for call quality.. Generally
similar to a mobile phone call. Like
mobiles though it can vary.
Ways of using VoIP
Using your home phone:
Using your regular phone and an
Using an IP phone:
When using a special IP phone, you
don't need a separate ATA.
Everything you need to use you r
broadband internet connection
Connect using your computer:
If your computer has speakers,
microphone, a sound card, and a high
speed internet connection you can use
your computer for VoIP.
Audio is converted to digital by a process
called encoding. This is the “voice” part of
VoIP. Once audio is encoded, it can be
transported via electronic means, such as
the internet. There are rules, or protocols,
that have been established for exchanging
information over the Internet, the basis of
which is called Internet Protocol, thus the
“IP” in VoIP.
VoIP is becoming popular as more and
more people utilize broadband technology.
Broadband technology is a large capacity
data connection to your home or office that
is “always on”. Examples are internet
service provided by cable or digital
subscriber line (DSL).
Internet Protocol describes, among other
things, how data is broken up into packets,
addressed, and transported. In this way,
you can use a single network to transport
many kinds of data at the same time. For
example, someone can be surfing the web
while another person is having a VoIP
Improved audio robustness
Parked calls automatically return if left
Personal contacts can be called with
specific services — for increased savings on
long distance costs
Voice commands. Use voice-activated
commands to dial, transfer, and retrieve
calls. You can also ask for the company
directory or for free directory assistance.
• Voice dialing: Use your voice, instead of
your phone keypad, to call contacts. This
hands-free solution eliminates the need to
memorize and press numerous key
• Call routing options. Choose how
incoming calls are answered. You can have
the Automated Receptionist, official
receptionist, or multiple users, route calls
when they come into your business
• Call status. Check in-call and parked-call
status from the Assistant by viewing status
• Park music. Play an audio file callers will
hear as they wait in park.
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