Transcript VOIP.ppt

VoIP
“I truly believe that VoIP is the telecommunications
wave of the future,” said Travis Mack, a VoIP
customer of only a year.
Michael Laport
Robin Heath
Abstract Idea.
• Voice over Internet Protocol
• Internet calling
– Making phone calls over broadband
networks rather than traditional landlines or
wireless networks.
– Transition from analog messages to digital
data moving across Internet framework.
– Actually been in use for several years in
long distance calling.
Standard Calling.
• Existing phone systems are driven by a
very reliable but somewhat inefficient
method for connecting calls called circuit
switching. (1)
• Circuit switching is a very basic concept
that has been used by telephone networks
for more than 100 years. When a call is
made between two parties, the connection
is maintained for the duration of the call.
(1)
Standard Calling.
• During a 10 minute phone call the circuit is open
for 10 minutes.
• In the early phone system, up until 1960 or so,
every call had to have a dedicated wire
stretching from one end of the call to the other
for the duration of the call. (1)
• Today's traditional phone network are somewhat
more efficient. Your voice is digitized, and your
voice along with thousands of others can be
combined onto a single fiber optic cable for
much of the journey. (1)
VoIP Calling.
• Data networks do not use circuit switching.
Instead, data networks simply send and
retrieve data as you need it.
– And, instead of routing the data over a
dedicated line, the data packets flow through
a chaotic network along thousands of possible
paths. This is called packet switching. (2)
Data-level VoIP.
• A codec converts the audio signal into a
compressed transmission, then back into
the audio signal at either end.
• Different protocols are used to connect
different devices (such as IP phones,
computers, or ATA’s) as to secure the
collaboration of different networks.
Three Ways to VoIP.
• ATA (Analog Telephone Adaptor)
– Converts a standard phone signal to
digital so that VOIP will work.
• IP Phone
– Specialized phones that comes
ready for VOIP service. Instead of
having the standard RJ-11 phone
connectors, IP phones have an RJ45 Ethernet connector. (3)
• Computer to Computer
– Easiest way to use VOIP. All you
need is the software.
What is all the buzz about? VoIP.
• VOIP can offer all the services of normal
phone services (voice mail, call waiting, etc.).
– Plus More:
• Email notification for voice mail
• Keep current phone number, or choose any
number available by your service provider
• Computer interface or normal phone, either work
• Portable service (VoIP adapter can travel with you)
• Merges service providers, lowers cost to you
– Replaces traditional land line and long
distance.
What makes VoIP so tantalizing?
• One network for communications
• No more long distance fees
• Perhaps the biggest advantages is the use
of digital data opens avenues in the
communications and entertainment
markets.
The Hurdles for VoIP.
• Transition from a 100+ year old copper
phone network to a budding broadband
network causes some inadequacies.
– Reliability
•
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•
•
•
Dependant on wall power
Emergency 911 calls
Network latency, packet loss,
Computer systems resource drains
Loss of packets
– Number of phone jacks limited per service
– Need broadband
– Security
Skype.
• Basic Program can be downloaded for free.
– Acts as a fancy chat program like AOL-IM.
– Allows for chat, text, and voice between people who have
Skype.
• Pay Services:
– SkypeOut – Allows you to call non-Skype users including
traditional phones and cell phones.
– SkypeIn – Gives you a regular phone number so that
people with traditional phones and cell phones can call.
– Skype Voicemail – Gives Skype users a virtual answering
machine similar to what most cell phones have.
• Skype is not a replacement for your ordinary telephone and
can’t be used for emergency calling. (4) It does not support
regular 911 service.
Local Service VoIP.
• Relatively Local Providers
– Vonage
– Comcast
• Local Providers NOT needed.
– 513 US Providers (5)
– Local Providers give a local physical phone number.
– Any provider can be used as you connect over the
internet.
VoIP applications.
• The integration of different mediums into one
communication device. More seamless than other
methods.
Business VoIP.
• Virtual numbers for business
– Save customers long distance fees.
– Internal Operations; Sales force –to- developers, no
long distance.
• Teleconferencing is an ease
• Cellular phone calling enabled by WiFi and WiMax
Business VoIP (Some Vonage offers).
• Outlook plug-in to call directly from a contact
list
• Browser plug-in to call a number by selecting
a number on any web page
• Business web page where customers can
enter their phone number to initiate a call from
your customer service department to them
Source citations.
1.
2.
3.
4.
5.
6.
7.
8.
http://computer.howstuffworks.com/ip-telephony4.htm
http://computer.howstuffworks.com/ip-telephony5.htm
http://computer.howstuffworks.com/ip-telephony1.htm
http://www.skype.com/
http://www.voipproviderslist.com/
http://moneycentral.msn.com/content/Savinganddebt/Finddealsonl
ine/P111021.asp
http://en.wikipedia.org/wiki/VoIP
http://moneycentral.msn.com/content/Savinganddebt/Finddealsonl
ine/P111021.asp
Any
VoIP
Prepare to meet your
doom,related
Griffin!
Questions?
Yes … I do