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Post on 06-Jul-2015
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Connecting the World
Multimedia ConferencingSystem (MCS)
Technology trends today indicate that the world of communications is converging.
Voice, video and data are all merging into one carrier base : Internet Protocol (IP).
Whoever manages to make the above a reality, with the ability to use current infrastructure and generic PCs, will become the world leader in multimedia communications.
Technology Trends
1st Generation : POINT TO POINT
Legacy Systems
Proprietary ISDN
2nd Generation : POINT TO MULTIPOINT
Current Systems
MCUISDN
ISDN
ISDN
ISDN
ISDN / MCU Based Systems
• The above mentioned technologies are loosing money and market share.
• They have realized their mistakes and are now working hard toward IP based solutions.
MCU based ISDN systems, running proprietary protocols
MULTIPOINT TO MULTIPOINT to multipoint..
Internet or IP Network
Video PABX of the future, where every office can be connected to each other via Intranets or the Internet. Cost of communications: RM 0.00
Current System
Requires dedicated ISDN lines to the desktop and Boardrooms, which mean additional infrastructure.
Expensive MCU (Hub) is needed for mixing and re-transmitting.
Expensive WAN link is proprietary and dedicated to video conferencing only.
Expensive WAN bandwidth increases proportionally with each new user.
Use your existing LAN infrastructure. Zero additional infrastructure cost.
Do not require an expensive MCU. It uses a server.
IP-based and merges with your existing corporate WAN link or uses the Internet.
WAN bandwidth needs remain constant, irrespective of the number of users.
Research Areas ofFuture System
Problems of Today
MCS Version 5.0 presents a MULTIPOINT-TO-MULTIPOINT system that has unique features overcome the disadvantages of current systems:
Allows multipoint desktop and boardroom conferencing using your existing LAN infrastructure, without effecting your current applications.
No expensive MCU is required.
MCS uses the non-proprietary IP protocol and runs over your existing network lines and even over the Internet.
The required WAN or Internet bandwidth remains constant, no matter how many sites join the conference.
Multimedia ConferencingDistributed Network
Entity Architecture RSW Control
Criteria
H.323 Client Video Module Audio ModuleControl Module ChatMLIC Server ClientDocument Conferencing Usage Monitoring
CIF Format
LINUX Codec DynamicCodec
Adjuster
LINUX CodecIntegratedEcho Cancellation
Controls For LINUX
Client Server
Web basedChat
IM Client Integration
Server to
Server
Auto Bandwidth
Shaper
Inter-MLICCompression
Inter- MLICRouting
IPv6Server
NATedServer
Server to
Server
Client Server
Reliable Multicast
Server to
Server
Cell Phone (3G Technology)
Tablet PCPDA Client(Wireless)
UnidirectionalLink Support
POTSIntegration
(VOIP)
Web BasedIPv6 Auto FirewallConfiguration
Web Admin
FundamentalTechnology
Core
Development
Future Development
Current Development
1. Uses the Real-time Switching Control Criteria to optimize bandwidth for multimedia conferencing.
2. Uses the Distributed Network Entity Architecture to provide the speed and processing power for high end real-time multimedia applications.
MCS Unique Features
• Allow 2 active participants • Integrated chat and document
conferencing • Drop joined user from conference• Receive multiple invitation to
conference• Change password• Invite during conference
MCS Features
Change Password
Invite during conference
Audio Features :
• Buffer volume control• Capture volume control• Enable / Disable audio transmission
Buffer Volume Control
Mute volume
Adjust volume
Volume figure will be shown
Capture volume Control
Mute volume (stop sending)
Adjust volume
Volume figure will be shown
Enable / Disable Audio
Enabled
Disabled
Video Features :• Allow changing of video frame rate • Auto video windows size changing• Multiple resolution• Multiple video windows• Allow changing of video source• Allow changing of video properties• Video windows alignments• Change Camera On the Fly
How to change settings :
Changing video frame rate
Auto video windows size changing
How to change settings :
Multiple resolution
• 4 different resolutions
320 x 240 pixels320 x 240 pixels 176 x 144 pixels176 x 144 pixels 160 x 120 pixels160 x 120 pixels 128 x 96 pixels128 x 96 pixels
Scenario : 1 Chairman & 2 Active participantPic : 320 x 240
Scenario where there are 4 windows with 320 x 240 windows size.
Multiple video windows :
• 1 Chairman , 1 Active Participant– Chairman : 2 windows– Active participant : 2 windows– Join participants : 3 windows
• 1 Chairman , 2 Active Participants– Chairman : 3 windows– Active participants : 3 windows– Join participants : 4 windows
Changing video source
• Function available for capture card
Video windows alignments• Types of alignments
– Left– Right – Top– Bottom– Boardroom– DC (Document
Conferencing)
Change Camera On-The-Fly
MCS Compatible to H.323 Standard
MCS ver5 able to work well with H.323. Below screen shot is one of the example on how MCS has been integrated with H.323.Video with the name “din’ is using MCS to transmit meanwhile name”sandra lim” using netmeeting. The screen shot is from MCS point of view.
MCS Chat Screen
Chat tool integrated with MCS ver5. Above is the sample of screen shot of chat window.
WAN
Ethernet
San Francisco
Ethernet
Kuala Lumpur
Ethernet
Helsinki
MLIC enables multiple LANs interconnected by WANs to join in a conference.
MLIC Entity
GAMSA HAMNIDA
Sivavenayakam VelayuthamNetwork Research GroupUniversiti Sains Malaysia
siva@nrg.cs.usm.my
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