VoIP a new connection - Kevin Kampa

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26 Οκτ 2013 (πριν από 3 χρόνια και 5 μήνες)

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2009


Network
Communications NT125


Kevin Kampa


[

VoIP a new connection
]


VoIP takes analog voice signals and converts them to digital. This digital signal is then
transmitted across
the internet using packet switching. Allowing consumers to bypass there phone company and the
charges that go with traditional analog calls.

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VoIP a new connection


There is most likely a new connection for all of us in the future when it comes to voice
communications. This new connection will most likely come in the form of VoIP (Voice
over
Internet Protocol).
VoIP is making the FCC (Federal Communications Commission
) and
traditional analog communication companies rethink
ing

the future of voice communication

(Federal Communications Commision, 2008)
.

In 2006 the ITU
pu
blished H.323

Protocol

( ITU
-
T Publications,
2006)

suite

(Valdes &
Roos, 2001)
.

This was to emphasize the enabling of videoconferencing capabilities over a LAN
(Local Area Network)

(Wikipedia contributors, 2009)
. The industry

however

focused m
ore
attention on

transmitting voice communications over a variety of IP networks

such as WAN
(Wide Area Network) and the internet

( ITU
-
T Publications, 2006)
.

This was the beginning of
VoIP.

VoIP takes analog voice signals and

converts them to digital. This digital signal is then
transmitted across the internet

using packet switching
. Allowing consumers to bypass there
phone company and the charges that go with traditional analog calls.

This is accomplished by
using one of seve
ral approaches. ATA is the simplest and most common approach. APA (analog
telephone adaptor) is a device that converts your analog phone signal to a digital signal for
transmission over the internet. IP Phones are also used, they convert your voice to digi
tal
themselves and plug right into a router or other internet adapter. Computer to computer is yet
another way we can use VoIP
. This approach uses your computer a microphone, sound card,
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speakers and your internet connection. It is recommended that you hav
e a high
-
speed connection
(DSL or cable).

Vonage is the most advertised VoIP in this area, but

not the only VoIP by far. AT&T,
voip.com, Clearwire, 1iPhone.com and many
more
VoIP providers are available to hook up to.
The rates are varied from free to mon
thly and yearly fees.

The cheaper long distance calls is the
main selling point of the VoIP providers.

Quality is the main holdback with VoIP, it is
susceptible to all the same errors as your internet connection are. There can be lags garbled
sounds nad j
ust plain missed parts of the conversation.


Recently there is an alternative to H
.
323,
this alternative is the

SIP (Session Ini
tiation
Protocol)

(Valdes & Roos, 2001)
. SIP is a more streamlined protocol specifically
developed for
VoIP. There is also MGCP (Media Gateway Control Protocol), which is geared more toward
features like call waiting.

Soon we may all be talking over VoIP, there are advances in
communication constantly.



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Works Cited

ITU
-
T Public
ations. (2006, March 1).
H.323 : Visual telephone systems and equipment for local
area networks which provide a non
-
guaranteed quality of service
. Retrieved March 4,
2009, from itu.int (International Telecommunication Union): http://www.itu.int/rec/T
-
REC
-
H
.323
-
199611
-
S/en/

About Voip
-
Info.org
. (2008). Retrieved February 4, 2009, from Voip
-
Info.org: http://www.voip
-
info.org/

Federal Communications Commision. (2008, september 9).
Consumer & Governmental Affairs
Bureau
. Retrieved 2 4, 2009, from Federal Commu
nications Commision web site:
http://www.fcc.gov/voip/

Valdes, R., & Roos, D. (2001, May 9).
How VoIP Works
. Retrieved March 4, 2009, from
HowStuffWorks.com: http://communication.howstuffworks.com/ip
-
telephony.htm

Wikipedia contributors. (2009, February 26
).
H.323
. Retrieved March 4, 2009, from Wikipedia,
The Free Encyclopedia:
http://en.wikipedia.org/w/index.php?title=H.323&oldid=273351903