1 dfnvc - a videoconferencing service for the german network for research and education “dfn” g....
TRANSCRIPT
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DFNVC - A Videoconferencing Service for the German
Network for Research and Education “DFN”
G. Maiss, K. Schauerhammer, R. Schroeder, K. Ullmann - DFN Germany
Status report - April 2004
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Contents
• DFNVideoConference (DFNVC)
– Service Components– Service Features and Advanced Features– Statistics– Further Plannings
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DFNVC: Service Components (I)
• Same equipment in two locations (Berlin and Stuttgart)
• MCUs:– Premium Equipment:
• per location 2 Radvision MCU-60/G.722 with TCM 30 Audio Transcoder Board -> 240 Ports
• per location 2 Radvision MVP 30 Video Boards
– Standard Equipment:• per location 1 Radvision MCU-100 -> 200 Ports
• Gatekeeper, Gateways and DCS– per location 1 Gatekeeper Radvision ECS 2.0– per location 1 Gatekeeper GNU-GK 2.0.2– per location 1 Radvision Gateway gw-P20– per location 1 Radvision Data Collaboration System
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DFNVC: Service Components (II)
Redundant service components in Berlin und Stuttgart
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DFNVC: Service Features
• The service :– allows ad hoc conferences– offers Dial-In for ISDN-based VC systems– provides a Global Dialing Scheme– supports preparation, initiation and
management of conferences– provides test results and descriptions for VC
systems– offers training courses for administrators
and hotline
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DFNVC: Video Competence Center
• VCC TU Dresden (Video Competence Center)
– responsible for VC systems– ongoing tests of VC systems (new releases)– descriptions and instructions for
installation and configuration for the most common VC systems
– interoperability matrix of VC systems and other VC components
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Compatibility of VC Systems
Quality:
Good, reliable
good, unreliable
no function
sufficient, reliable
sufficient, unreliable
unsufficient, reliable
unsufficient, unreliable
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DFNVC: Advanced Services
• Observing the quality of network (LAN and access lines):
– Performance measurement on IP connection:• packet loss, one way delay, jitter• tests with a measurement system of the University
of Erlangen
– H.323 Beacon• tests with special organisations
– Prioritisation of IP-Adresses• tests with special organisations
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Statistics (I)
• Participants in the production service– contracts signed with 157 organisations and
institutes– ongoing negotiations with further
organisations– nearly 50% with own gatekeeper
• 17 training courses since April 2002 with 10-15 participants per course
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• 78 Gatekeeper registered, thereof among others 35 GNU-GK, 15 Cisco MCM, 6 Radvision, 5 VCON MXM, 2 Ezenia
• 340 devices registered with the DFN-GK, thereof among others 65 Netmeeting, 6 Sony,
48 Tandberg, 4 SunForum, 39 VCON Vigo, 4 VCON Falcon IP, 35 Polycom Viewstation, 3 VTEL Smartstation, 35 Polycom Via Video, 3 PictureTel/iPower, 18 VCON Escort/Cruiser, 3 Intel ProShare 13 GnomeMeeting/ohphone,
(only DFN-GK!!!)
Statistics (II)
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Statistics (III)
Month Number ofconferences
Sept 2003 918Oct 2003 1389Nov 2003 2119Dec 2003 1693Jan 2004 1277Febr 2004 1611
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DFNVC: Further Plannings
• Migration to E.164 / DNS / ENUM• Service administration via LDAP (H.350)• Locking VC portal against unauthorized users• Integration of new functions (e.g. SIP based
signalisation, VoIP-structure)• Reservation system
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DFNVC: Links
• VC service description http://www.dfn.de/service/dfnvc/
• VC portal http://www.vc.dfn.de/• Videoconference Cookbook
http://vcc.urz.tu-dresden.de/ (German only)
• Procurement of VC systems and gatekeeper:VCC Dresden (Video Conference Center) http://vcc.urz.tu-dresden.de/vc-systeme/