Transcript Multimedia Conferencing

Connecting the World
Multimedia Conferencing
System (MCS)
Technology Trends
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.
Legacy Systems
1st Generation : POINT TO POINT
Proprietary ISDN
Current Systems
2nd Generation : POINT TO MULTIPOINT
ISDN
ISDN
ISDN
MCU
ISDN
MCU based ISDN
systems, running
proprietary
protocols
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.
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
Problems of Today
Current System
Research Areas of
Future System
Requires dedicated ISDN
lines to the desktop and
Boardrooms, which mean
additional infrastructure.
 Use your existing LAN
infrastructure. Zero
additional infrastructure
cost.
Expensive MCU (Hub) is
needed for mixing and retransmitting.
Do not require an
expensive MCU. It uses a
server.
Expensive WAN link is
proprietary and dedicated
to video conferencing only.
IP-based and merges
with your existing
corporate WAN link or uses
the Internet.
Expensive WAN
bandwidth increases
proportionally with each
new user.
WAN bandwidth needs
remain constant,
irrespective of the number
of users.
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.
Fundamental
Technology
Multimedia Conferencing
Core
Development
H.323 Client
Video Module
MLIC
Control Module
Client
Controls
For LINUX
CIF Format
LINUX Codec
Dynamic
Codec
Adjuster
Auto
Bandwidth
Shaper
Inter-MLIC
Compression
IPv6
Future Development
Current Development
Audio Module
RSW Control
Entity Architecture
Criteria
Server
Document Conferencing
Server
Client
Server
to
Server
Client
Usage Monitoring
Server
Reliable
Multicast
Integrated
Echo Cancellation
Web based
Chat
Inter- MLIC
Routing
Chat
Distributed Network
Server
to
Server
LINUX Codec
IM Client
Integration
IPv6
Server
Auto Firewall
Configuration
NATed
Server
POTS
Integration
(VOIP)
Server
to
Server
Web Based
Web Admin
Unidirectional
Link Support
PDA Client
(Wireless)
Tablet PC
Cell Phone
(3G Technology)
MCS Unique Features
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 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
Change Password
Invite during conference
Audio Features :
• Buffer volume control
• Capture volume control
• Enable / Disable audio transmission
Buffer Volume Control
Volume figure will
be shown
Adjust volume
Mute volume
Capture volume Control
Volume figure will be shown
Mute volume (stop sending)
Adjust volume
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 pixels
176 x 144 pixels
160 x 120 pixels
128 x 96 pixels
Scenario : 1 Chairman & 2 Active participant
Pic : 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.
MLIC Entity
Ethernet
Ethernet
San Francisco
Kuala Lumpur
Ethernet
WAN
Helsinki
MLIC enables multiple LANs interconnected by WANs to join in a
conference.
Sivavenayakam Velayutham
Network Research Group
Universiti Sains Malaysia
[email protected]
GAMSA HAMNIDA