Download 03 - TEKNIK BERKOMUNIKASI LEWAT VIDEO CONFERENCE VPN

TECHNIQUES OF COMMUNICATION VIA VIDEO CONFERENCE
USING VPN TECHNOLOGY BASED MPLS
Aswandi, S.Kom,.M.Kom and Leni Marlina, S.Kom., M.Kom
Polytechnic Negeri Lhoksemawe in Aceh and University Pembangunan Panca Budi in Medan
ABSTRACT
Currently, the development and use of communication networks very rapidly once, so that desperately
needed a reliable technology to help the business activities of companies/Establishments to be able to
communicate between the Office and partners with other companies so as to form an online network.. The
online network to assist and expedite the dissemination of information, remote, data transfer, and improve
services to the public, as well as the efficiency of work processes and the management of the company. For
medium-sized companies to the top in general have started using internet-based communications network in
the application of VPN technology based on the MPLS IP. IP development is very good in terms of scalability,
which makes Internet technologies become inexpensive enough. But the IP has serious flaws in the
implementation of QoS. But later developed several methods to improve the performance of IP networks,
among other MPLS (Multi Protocol Label Switching). In the network we can communicate via Video
conference that is a service that combines the technologies of communication of images and sound in real time.
To conserve the limited bandwidth needed for video coding standard communication protocol using H.263
recommended ages are ITU-T. Communication via video conference happen or more 2-way interactions can
be seen or heard his voice in its objects places, situations and different conditions, for example when a are
discussions, meetting, chat, video call and others.To answer the needs of today's enterprises and provide
solutions that best fit the current technology support, i.e. communicating over Video Conference using
technology VPN (Virtual Private Network)-based multimedia platform with the MPLS IP technology (Internet
Protocol Multih Protocol Label Switching).
Keywords : Video Conference, VPN, IP, MPLS, Online.
Introduction
The current technological developments constantly
changing, technology network will be a very
decisive role in the business world. Success in
mastering information technologies and networks
will determine the success of the company in
competing. This technology is able to integrate all
existing networks, either create one new network or
retain the network exists.
Usually over intermediate companies to attend
the meetings, raker meeteng, or meetings of the
company's business activities, which cost the
company as to the cost of travel for supplies for
the cost of lodging, catering etc. With the above,
the company raced to find solutions that could
saving cost the company.
The solution could be as Chair face-to-face
with communicate directly via Video Conference,
IP-based VPN technology using MPLS to be able
to parse the traffic of voice, video and data. The
company is using its limited bandwidth it takes
video coding standard for communication using
the H.263 Protocol recommended ages are ITU-T.
Communication via video conference that is used
for video and voice data transfer so it makes it
easy to communicate in spite of limited network
bandwidth.
This communication will take place 2-way
interactions or more can be seen or heard his voice
in its objects places, situations and different
conditions, for example when a are discussions,
meetting, chat, video call and others. This is very
suitable and menguntung for companies who are
located far apart and have a partner of cooperation
with other companies that see, hear and speak to
each other. In using video and audio
communication can also be done sending data over
the same network.
Therefore the company looking for business
communications services is reliable, flexible, fast,
cheap prices for various purposes of
communication they need. The technology will be
used in a communications network is VPN
(Virtual Private Network) based on MPLS IP with
security calculations in a company that has a lot of
branches and the ability to be generated. The
MPLS serves as an efficient system in terms of
routing, forwarding, and switching from the flow
of traffic that flows on the network.
So this technology is well suited as a perfect
solution for medium-sized companies over which
the company has branches and partner companies
to communicate face-to-face without having to
come right out the intended company.
Communication
Human life in the world can not be removed
from the activity of communication because
communication is an integral part of the system
and order of human social life and society.
Communications activities can be seen in every
aspect of the daily life of human beings that is
from the waking up people go to bed at night.
Certainly a large part of the activities of our life
using good communication is nonverbal and verbal
communication.
According to Wilbur Schramm stated:
communication comes from the words (language)
Latin communis which means the General
(common) or together. When we communicate,
actually we're trying to foster a sense of
Community (commonnes) with someone. I.e. we
are trying a wide range of information, ideas or
attitudes. As in this description, for example I was
trying to communicate with the readers to convey
the idea that the nature of a communication is
really the effort makes the recipient or the giver of
communication
have
understanding
(the
understanding) that is equal to the specified
mailbox [Suprapto, Tommy. 2006].
Data Communication
Data communication is the delivery of the
data or information from a source (source) to a
destination (destination). Data communication can
take place between two or more types of
computers that are the same or different kind. This
information was originally in the form of sounds,
images and text, is then converted into units of
digital data by a computer. Data communication
may run better if it refers to the standard rules are
recommended by major international bodies that
set them up. Block diagram of the data
communication circuit can be seen in Figure 1.
Block diagram of the three parts, namely: a source,
destination and transmission media [Stallings,
William 2001].
Media Transmisi
Source
(Sumber)
Digital Equipment
Destination
(Tujuan)
Analog/Digital
Digital Equipment
Figure 1. Block Diagram Of The Data Communication
The communication technique here is how to
communicate is done in the communication system
between the sender and the recipient. Wireless
LAN technology on its own is more popularly
used for data communication, even though
theoretically Wireless LAN technology has the
capability of data transfer.
Video Conference Technology
Video conference is a telecommunications by
using audio and video so that the meeting took
place in different places. This can be between two
different locations (point-to-point) or include
multiple locations at once in a single conference
room (multi-point).
The core technology used in video
conferencing system is digital compression of
audio and video streams. Hardware or software
that performs compression is called a codec. The
number of compression can be achieved up to 1:
500. The resulting Digital stream of 1s and 0s is
subdivided into labeled packets, which are then
transmitted via digital networks (usually ISDN or
IP). The use of audio modems in the shipping
channels allows the use of Plain Old Telephone
System POTS or, in some low-speed applications,
such as videotelephony, because THEY convert
the digital analog waves into vibrations in the
audio spectrum range.
Based on the type of video conference
connections between the wearer can be divided
into three parts:
a. Real
Time
Colaboration
Multiparty
Conferencing, Conference relations which is a
means of instantly with good resolution and
interactive.
b. Active Participation partnerships Users,
relationships that occur between the user and
the computer network or database, a
Conference that immediately with a good
resolution and interactive.
c. Passive Participation partnerships Users, user
participation, passive and requires immediate
and interactive relationships.
ITU-T H.263 Video Compression Standards
H.263 standard published by the International
Telecommunications Union (ITU) to support video
conferencing or video telephony. In general the
working patterns of h.263 is a video frame will be
captured at the source/sender and encoder
(compress) and video encoder. The video stream is
compressed and then passed through a network or
telecommunication channels and at its end on the
decoder (decompression) using video decoder.
Frames in this decoder which will then be on show
[Fina, 2010].
On this now pretty much standard, each
designed for specific purposes. For example, JPEG
for still pictures, MPEG2 to digital television,
H.261 video conference via ISDN. H.263 at point
for video coding for low speeds (typically 20-30
Kbps and of course on top of it). H.263 standard
specifies requirements for the encoder and video
decoder. H.263 encoder or do not explain about
the decoder itself. However, H.263, specifies the
format and content of the data stream in the
encoder (compress).
Routing
In order for the router to know how and where a
packet should be forwarded, then need a process
that can be grouped into two groups, namely:
a. Static Routing - Routers forward packets from a
network to other networks based on the route
(Note: as a route on a city bus) that is specified
by the administrator. Static routes on the routing
is not changed, unless changed manually by an
administrator.
b. Dynamic Routing - the Router examines its
own best route will take to forward packets
from a network to another network. The
Administrator does not specify the route that
should be taken by the packets. Only
administrators determine how the router
examines the packet, and then a router learn it
on their own. Routes on dynamic routing
changes, according to a study obtained by the
router.
Virtual Private Network (VPN)
IP VPN is a special type of VPN service that
sends Internet Protocol (IP) infrastructure through
public-private IP or internet. That is a key
benchmark of IP VPN is IP service delivery to the
end user. With IP VPN data networking is possible
in a private and secure through a network of public
internet or private IP network for remote access
user communications, site-tosite, or corporate-tocorporate.
Casey Wilson dan Peter Doak in his book
entitled Creating and Implementing VPN, IP VPN
configuration which divides have been applied in
the field into three categories, namely:
a. The Intranet an Intranet is a network that is
connected between the Central Office and
branches that spread provide separate locations
with headquarters. The Intranet provides
communication facilities and the exchange of
information between internal data as well as a
company or Department with branches that are
far apart.
Figure 3. Intranet IP VPN
b. Extranet
An enterprise network that could connect to the
internet network, but with the technology of the
company network, VPN can connect with VPN
clients that are separated by a VPN server. The
VPN Server does not function as a router
connects two networks of funds would cause
everybody can access the hidden networks,
while a VPN server, can set that only certain
users can access a hidden network.
c. Remote Access
A technique that is used to connect a remote
user with a network of companies. One client
was quite in touch with local ISP and VPN
software creates a virtual network is notable
(virtual Private Network) between the user and
the server of the company through data
communication media are used.
MPLS Architecture
Multi Protocol Label Switching (MPLS), is a
network architecture (network) that is defined by
the IETF to fuse the label swapping mechanism in
two layers with the routing in three layers to speed
up the delivery of the package. The MPLS
architecture is designed to meet the characteristics
required of a characteristic-the network class
carrier (bearer) large scale.
MPLS network using three-layer routing
protocols and protocol and transport layer
mechanisms are two that can be earned. IETF
MPLS Working Group formed in 1997 in order to
develop common methods which have been
standardised. The purpose of the MPLS Working
Group is to menstandarkan the protocols using a
shipping label swapping (Exchange of label).
MPLS Network consists of a circuit called a labelswitched path (LSP), which connect the dots is
called a label-switched router (LSR). The first and
last called LSR ingress and egress. Each LSP
associated with a forwarding equivalence class
(FEC), which is a collection of packages that
accept the same forwarding treatment at an LSR.
The FEC is identified with the fitting label.
To establish LSPS, required a persinyalan
Protocol. This Protocol specifies the forwarding
based on the label on the package. The Label is
short and fixed-sized forwarding and accelerate the
process of enhancing the flexibility of the selection
path. The result is a network that is more
connectionoriented datagrams
datagram
[Kana, Rosen
2001].
The use of the label swapping has many
advantages. He was able to separate the issue of
input routing forwarding. Routing is a matter of
global network that requires the cooperation of all
the router as a participant. Are forwarding
(shipping) is a local issue. Router switch take the
decision myself about where that path will be
taken. MPLS also has advantages that are able to
reintroduce into dataflow stak connection IP
[Kana, Rosen 2001].
Figure 3. MPLS Architecture
MPLS Network consists of a circuit called a
label-switched
switched path (LSP), which connect the dots is
called a label-switched
switched router (LSR). The first and
last called LSR ingress and egress. Each LSP
associated with a forwarding equivalence class
(FEC), which is a collection of packages that accept
the same forwarding treatment at an LSR. The FEC
is identified with the fitting label. To establish LSPS,
required a persinyalan Protocol. This Protocol
specifies the forwarding based on the label on the
package. The Label is short and fixed-sized
fixed
forwarding and accelerate the process of enhancing
the flexibility of the selection path. The result is a
network that is more
ore a datagram connectionconnection
oriented.
System Analys
At this time the need for technology, be it
information technology and telecommunications is
very high especially the medium-sized
medium
companies
to the top. All companies need technology to
accelerate development or improving the ability of
business processes. The development of
technology which is currently very quickly is a
telecommunications technology presents a
selection of forms of technology and sophistication
due to the need to communicate and Exchange
data quickly and easily. Communications play an
important role in the business world today, the
need for this communication encourages the man
to continue to innovate to make inroads to create
communication tools that are as simple as possible.
In addition to conveying me
messages and information
in the form of voice, video is now also delivering
various forms of data. Since the day of transfer of
data is done getting bigger then it needs a system
of communication that can be fasility.
The proposed communication network system
The company must develop and improve the
technology of IP-based
based MPLS VPN network that
will be applied to the services provided betwee
between
branches or partner companies will become more
flexible and aggressive safe and reliable and
accurate. Techniques to communicate via Video
Conference will offer the kind of service that was
used to send information in the form of sound and
video can be face-to-face
face online. Now it's time to
build Video Conference Service and costs are
cheaper and need not bother to attend the meeting,
meeteng, raker or meetings of the company's
business activities, which cost the company,
simply make use of IP-based
IP
MPLS VPN
technologies are built. Companies need to
plan/propose the development of services that
support service for sound and video quality,
reliable, and accurate (reliability) with adequate
speed.
Analysis of The Requirement
The equipment needed to implement a video
conference among other things:
a. PC/laptop is connected to the network
b. Camera
c. Headset
d. Speaker
e. Microphone
Video Conference Network Model
Models
ls
of
communication
network
infrastructure video conference using IP-based
IP
MPLS VPN technologies that will be applied
across the enterprise so that the interdisciplinary
and partner companies to communicate can be
seen in Figure 4.
Figure 4. Video Conference Network Model
By using video conference communication
network, it can provide enough potential
Alternatively use technology based on the MPLS
IP VPN, in addition to the already available to a
wider network, access charges can be much
cheaper than using a network telephone, face-toface during the meetings.
Video Conference Implementation
Communication system implementation stage
of the enterprise network using technology VPN
(Virtual Private Network) technology-based MPLS
IP (Internet Protocol Multi Protocol Label
Switching). The purpose of the video conference
communication system of the company is to
facilitate face-to-face online with memanfaaakan
VPN technology used by the company. To
implement them, it takes a software tools in the
form of services or facilities for Polycom video
conference conducted by placing a camera, headset
and micropone. System implementation stage is
the stage of putting the system so that it is ready to
be operated on the actual circumstances, so it will
be known to the system that made really can
produce the desired goal.
Audio And Video Systems At Polycom
Polygon Video System using video coding
standard (ITU) H.263. The frame can display up to
30 fps, 640 x 480 resolution that results achieved.
Polygon video system has the ability to display on
desktop simultaneously, the camera on the display
near the site without losing the reliability of the
system. Polygon system able to control the camera
on the far site. Polygon can use various types of
video input devices. But to produce good quality
depends on the video input device (camera type
used) by Polycom. To transmit the audio signal
with a low bandwidth needs used audio coding G.
722.1 14 kHz audio frequency. The audio system
also features Automatic Polygon Gain Control..
Testing Of The System
Data communication network system as well
as video conferencing, server computer acts as a
router that connects the PC on the LAN between
the company to some other branch. Setting access
rights is done on the server operating system. No
IP of each of the computers that are allowed to be
registered to access the Default Gateway (IP LAN)
who is registered with the router. Under normal
conditions/default client computer cannot access,
this is due to the existence of the rules contained in
the windows settings. Changing these rules could
be done automatically when the client login and
meets the system requirements. The settings file
changes via your network administrator. So
network administrators can only grant privileged
access on the client computer. A communication
network has been built using MPLS-based IP VPN
technology with faster connections and is suitable
to be applied in companies.
Using Polycom Video Conference
Steps to do a video conference communication as
follows:
a. The Polycom PVX applications, by means of
click Start ~ click PVX Polygon Polygon PVX
.exe
Figure 5. Polycom PVX
b. Display dialog box then
configuration, click next.
appears
the
Figure 6. Configuration Language selection
c. Next fill in your name and e-mail address of
the user of polycom PVX, then will get the
extension box automatically. After you finish
filling, click next to proceed to the Finish to
end the arrangement of polycom.
Figure 7. The Last Display Setup Of Polycom
d. Next live video conference between the far site
and near the site. The process starts with how
to enter the call number of the IP Address in
the address box near the site that exists on the
user interface Polycom PVX. After the entered
IP address number in accordance with the IP
Address number on the next phase of the site of
far is to press the Call.
Figure 8. The Call To The Far Site
e. Next if both computers are connected, the call
from the far site
Figure 9. The Video Display On The Far Site
f. the Next process call from near site far site
Figure 10. The Video Display On Near Site
If you want to see the display between the far
site and near site simultaneously in a
computer/Laptop then the modes the display
Picture-in-picture to be enabled. To enable the
mode the Picture-in-picture is done by pressing the
PIP icon on the user interface and then select the
PVX Polygon Picture-in-picture on.
Conclusions
With his round the research, obtained some
lessons:
(1) Network system use technology vpn basing ip
mpls employed to do all business activities
company.
(2) Technology needs tissue that reliable be
important for the company to connect between
offices and partner company.
(3) With video conference, can make any from
anywhere who have broadband connectivity or
broadcast must connected with tissue company
the intended.
(4) To ease peng-aksesan can be utilized softwares
polygon pvx client that supports video service
conference.
(5) The use of software polycom this namely to
communicate as discussion, meetting, chat,
video call and others. A list of pustaka.
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