Transcript Emerging Technologies

Emerging Technologies
Emerging Technology Overview
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Emerging technologies are those which are
just beginning to be adopted or are at the
initial acceptance stage, and are expected to
make a significant contribution to the world of
IT and the businesses that implement them.
Voice over IP
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VoIP (voice over IP - voice delivered using the
Internet Protocol) is a term used in IP Telephony for
a set of facilities for managing the delivery of voice
information using the Internet Protocol.
This means sending voice information in digital
form in discrete packets rather than in the traditional
circuit-committed protocols of the public switched
telephone network (PSTN).
A major advantage of VoIP and Internet telephony is
that it avoids the tolls charged by ordinary telephone
service.
Voice over IP
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In addition to IP, VoIP uses the real-time
protocol (RTP) to help ensure that packets get
delivered in a timely way.
Using public networks, it is currently difficult
to guarantee Quality of Service (QoS).
Better service is possible with private
networks managed by an enterprise or by an
Internet telephony service provider (ITSP).
How VoIP Works
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Using VoIP, an enterprise positions a "VoIP
device" at a gateway. The gateway receives
packetized voice transmissions from users
within the company and then routes them to
other parts of its intranet (local area or wide
area network) or, using a T-carrier system or
E-carrier interface, sends them over the public
switched telephone network.
Ways to Talk with VoIP
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4 common ways
Most vendors support all of these options
VoIP – Option 1 – Computer to
Computer
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This is the easiest way to use VoIP.
No long distance charges.
Several companies offer free solutions
You need a microphone, sound card, speakers,
and high speed Internet
NOT suitable for business!
VoIP – Option 2 – Computer to
Telephone
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This method allows you to call anyone (who
has a phone) from your computer.
Requires a software client.
The software is typically free, but the calls
may have a small per-minute charge.
VoIP – Option 3 – Telephone to
Computer
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A few companies are providing special
numbers or calling cards that allow a standard
telephone user to initiate a call to a computer
user.
The caveat is that the computer user must
have the vendor's software installed and
running on his or her computer.
The cost of the call is normally much cheaper
than a traditional long-distance call.
VoIP – Option 4 – Telephone to
Telephone
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Through the use of gateways, you can connect
directly with any other standard telephone or
IP telephone in the world.
SSL VPN
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SSL VPNs will provide better connectivity for
remote user VPN’s (as opposed to site-to-site
IPSec VPN’s).
SSL VPNs require only one open port on the
firewall.
SSL VPNs create a portal for the users to go
to with their applications – based on domain
policies.
MPLS
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Multiprotocol Label Switching (MPLS) is a
standards-approved technology for speeding
up network traffic flow and making it easier
to manage.
MPLS involves setting up a specific path for a
given sequence of packets, identified by a
label put in each packet, thus saving the time
needed for a router to look up the address to
the next node to forward the packet to.
MPLS
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MPLS is called multiprotocol because it works with
the Internet Protocol, Asynchronous Transport Mode
(ATM), and frame relay network protocols.
MPLS allows most packets to be forwarded at the
layer 2 (switching) level rather than at the layer 3
(routing) level.
MPLS makes it easy to manage a network for quality
of service (QoS). For these reasons, the technique is
expected to be readily adopted as networks begin to
carry more and different mixtures of traffic.