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BZVD
Dresden University of Technology
Computer Centre
Support Centre for Video Conference Services (BZVD)
BZVD
Tasks
User Poll
Wolfgang Wünsch
Christoph Fleck
Purpose
MCU
Tests
H.323 Matrix
Accessories
Video Conferences in the German Research Network
Address Book
Information
To Do
Links
TERENA Networking Conference 2001
‘Highlighting Advanced Networks and Services‘
Antalya, Turkey
14 - 17 May 2001
Video Conferences in the German Research Network
TNC 2001
16 May 2001
BZVD
BZVD
Tasks
User Poll
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Dresden University of Technology
Computer Centre
Support Centre for Video Conference Services (BZVD)
Zellescher Weg 12
01062 Dresden
Project Manager:
Dipl.-Ing. Wolfgang Wünsch
Staff:
Dipl.-Inform. Undine Grohmann
Dipl.-Ing. Christoph Fleck
Dipl.-Ing. Detlef Makowitz
Dipl.-Inform. Frank Schulze
Students:
Reinhard Förster, Thomas Uhle
André Schulze, Tino Schinnerling
Tel.:
(0049)-0351-463-5653
Fax:
(0049)-0351-463-7116
Video: video.urz.tu-dresden.de
(0049)-0351-463-8688
E-Mail: [email protected]
WWW: http://bzvd.urz.tu-dresden.de
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Tasks of BZVD
BZVD
Tasks
User Poll
Maintenance of local
network & equipment
Education
Purpose
MCU
The BZVD as
a service centre
of DFN
Tests
H.323 Matrix
Accessories
Address Book
Information
User consulting
Application searches
& tests
To Do
Links
Providing video conferences
(as a service)
Video Conferences in the German Research Network
TNC 2001
16 May 2001
User Poll
BZVD
Use of Video Conferencing
Tasks
User Poll
13% not planned
30% short-term
Purpose
MCU
Tests
H.323 Matrix
57% already used
Accessories
Address Book
Information
To Do
Links
Frequency:
Average duration:
Main technology:
Up to 15 conferences per month
Up to 1 hour
MBone, H.323
October 1999
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Purpose of BZVD
BZVD
Tasks
User Poll
• Support of the DFN community with
planning, installation and use
of video conference services
Purpose
MCU
• Video conferencing as a regular service in the WiN
Tests
H.323 Matrix
Accessories
• Co-operation with other projects of the DFN
Address Book
Information
• Knowledge transfer between local partners in the WiN
To Do
Links
• Efforts and benefits  synergy effects
Video Conferences in the German Research Network
TNC 2001
16 May 2001
User Consulting and Demonstrations
BZVD
Introduction to standard users:
Tasks
User Poll
Purpose
MCU
• Opportunities and limitations of video conferencing
• Hardware and software look-and-feel
• Recommendation: H.323 or MBone tools
Tests
H.323 Matrix
Accessories
Users with special demands:
Address Book
Information
To Do
Links
• Help on selecting hardware and software
• Supporting with first steps
• H.323 and MBone tools and others
• ATM, ISDN (H.320), gateway solutions
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Providing Video Conferences
BZVD
Tasks
User Poll
Purpose
MCU
Support for users with our equipment:
• during usage mobile BZVD communication equipment
(e.g. broadcasts of conferences / meetings)
• Provide a stationary video conferencing room for groups
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Usage:
• Ohio State University, Columbus
• Demonstration for TIB e.V.
(Technology & Innovations Consulting for Employees, Hamburg)
• Tests in co-operation with the Max Planck Society
• etc.
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Network of Competence
BZVD
Tasks
User Poll
Partners  Network of local competences in the WiN
• Contacts with app. 20 organisations and institutions
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
• 8 different computer centres in Niedersachsen and
6 other research institutions in Germany
• Deutscher Wetterdienst,
Virtuelles Theater Bochum,
Europa Universität Frankfurt/Oder
and other
• (With single institutions at the moment, no network yet)
• contacts are presently rather bilateral, not yet interlinked
Video Conferences in the German Research Network
TNC 2001
16 May 2001
MCU Service of DFN
BZVD
Tasks
User Poll
Application scenarios:
• Directors, managers
• Scientists
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Demands:
• Reliable and unbureaucratic management of the MCU
• Reservation tool for the MCU with direct users access
• Video quality: at least 384 kbps
• Audio quality: G.722
• T.120 for application sharing
• Continuous presence: display of the last 4-5 participants
• Display of names of the participants of a conference
• Reliable service, hotline, FAQs
• Automation of the service: directory, configuration,
billing, monitoring, gatekeeper (centralised / distributed)
Video Conferences in the German Research Network
TNC 2001
16 May 2001
MCU Service of DFN
Development tasks
BZVD
Tasks
User Poll
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
DFN
• Provision of a reservation system
• Installation of components
• Installation of a monitoring system
• Installation of a service administration
• Recommendations for end systems / clients
User
• Installation of a gatekeeper (if necessary an MCU)
Information
To Do
Links
Time scheduling
Start piloting in summer 2001 with restricted
functionality (lack of reservation system)
and limited number of users
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Tests of H.323 Devices
Purpose: MCU services by DFN in WiN
BZVD
Tasks
Terminals: end devices
User Poll
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Polyspan: Viewstation 128, Viewstation 512, ViaVideo
Sony: Contact 1600
Tandberg: 1000
VCON: Escort 25, Crusier 384, MC 8000, Falcon IP, ViGO Pro
Intel: Proshare 500, TeamStation
Elsa Vision II, NetMeeting 3.01, SunForum 3.1 & 3.0
MCUs: multi control unit for group conferences
Information
To Do
Links
FVC:
ACCORD:
RADVision:
ezenia!:
Click To Meet
MGC 100
MCU-323
encounter 1000 NetServer
reliable, in active development, no further development, instable
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Tests of H.323 MCUs
MCUs: multipoint control units for H.323
BZVD
Tasks
User Poll
FVC: Click To Meet
Purpose
MCU
ACCORD: MGC 100
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
RADVision: MCU-323
Links
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Tests of H.323 MCU‘s
BZVD
FVC: Click To Meet (Demo Version)
Tasks
• Usage and registeration is done by the members
User Poll
• Closed groups with up to 15 users, small conferences with 4 users
• Scheduled or ad-hoc Conferences, browser-based
Purpose
MCU
ACCORD: MGC 100
Tests
• Administrator permanently needed, registration of users required
H.323 Matrix
• Large, closed groups, large conferences possible
Accessories
• Administrator starts conference
Address Book
• Unique functions: video splitting modes, speed matching
Information
To Do
RADVision: MCU-323
Links
• Usage by users themselves, no registration required
• Medium-sized of conferences
• Conferences start with dialing from terminal
• Audio problems with NetMeeting
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Results of Tests
BZVD
• Group conferences with more than 4 terminals: difficult
Tasks
User Poll
• Every participant with bad audio equipment cause disturbances
Purpose
• Video coding without special hardware is not optimal
MCU
• Video display on TV - best solution, but expensive
Tests
H.323 Matrix
• Compatibility issues between certain H.323 devices
• Gatekeeper is part of the system
concept for the WiN
Address Book
Accessories
Information
To Do
Links
• Quality of G-WiN satisfies the needs
• Local problems occur sometimes
• MCU: highest requirements in the network
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Compatibility Matrix for H.323
BZVD
Tasks
User Poll
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
[2] http://bzvd.urz.tu-dresden.de/vc-systeme/matrix/
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Accessories
BZVD
Tasks
User Poll
Purpose
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Video Conference Address Book
BZVD
• List of video conference users
Tasks
• Users create and change entries individually
User Poll
Purpose
• Listing of the entries is generally accessible
[3] http://bzvd.urz.tu-dresden.de/adressen/adr.php
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Information of BZVD
BZVD
Information available in German only [1]:
Tasks
• Audio / video: signals, connectors, codings
User Poll
• Room equipment and design
Purpose
• Video conference hardware & software:
MCU
• Chosen products, own tests
Tests
• Long list of manufacturers, distributors, services
H.323 Matrix
Accessories
Address Book
• MBone software archives
• Poster: audio, video, MBone [4]
Information
• MBone Manual
To Do
• PC hardware: audio / video cards
Links
• Notebook for video conferences
English translation of unique information upon request
(compatibility matrix)
Video Conferences in the German Research Network
TNC 2001
16 May 2001
To Do
BZVD
• H.323 over Firewall
Tasks
User Poll
• Gatekeeper
Purpose
• QoS
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Video Conferences in the German Research Network
TNC 2001
16 May 2001
Links
BZVD
Tasks
User Poll
Purpose
[1]
http://bzvd.urz.tu-dresden.de/
[2]
http://bzvd.urz.tu-dresden.de/vc-systeme/matrix/
[3]
http://bzvd.urz.tu-dresden.de/adressen/adr.php
[4]
ftp://ftp-mm.urz.tu-dresden.de/
pub/dokumentationen/allgemein/audio-video-mbone_poster.pdf
MCU
Tests
H.323 Matrix
Accessories
Address Book
Information
To Do
Links
Video Conferences in the German Research Network
TNC 2001
16 May 2001