IP Videoconferencing on JANET Internet2 International Task Force Internet2 Member meeting
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Transcript of IP Videoconferencing on JANET Internet2 International Task Force Internet2 Member meeting
![Page 1: IP Videoconferencing on JANET Internet2 International Task Force Internet2 Member meeting](https://reader036.fdocuments.us/reader036/viewer/2022062517/5681332e550346895d9a2b0e/html5/thumbnails/1.jpg)
27th October 2002 IP VC on JANET Slide 1
Overview of JANET IP Videoconferencing
IP Videoconferencing on JANET
Internet2 International Task Force
Internet2 Member meeting
27th October 2002
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27th October 2002 IP VC on JANET Slide 2
Overview of JANET IP Videoconferencing
Report: David Salmon
UKERNA
Slides: Roger BolamVideo Development Engineer
UKERNA
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27th October 2002 IP VC on JANET Slide 3
Overview of JANET IP Videoconferencing
• Background to JANET Videoconferencing
• IP Videoconferencing Pilot
• Service Components and Capabilities
Outline
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27th October 2002 IP VC on JANET Slide 4
Overview of JANET IP Videoconferencing
• Mid to late 90’s– High quality studio based service over ATM
network– Limited number of sites
• Centralised videoconferencing service to community for five years– Mix of ISDN and ATM technologies
History of Videoconferencing Services on JANET
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27th October 2002 IP VC on JANET Slide 5
Overview of JANET IP Videoconferencing
• Plenty of SuperJANET4 capacity– Initially 2.5Gb/s, now 10Gb/s backbone
• ATM Closure of Scottish MANs Videoconferencing Network (SMVCN)
• Welsh Video Network developments– 90 studios now equipped and operational
• A requirement from our community
Drivers for IP Videoconferencing Service
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27th October 2002 IP VC on JANET Slide 6
Overview of JANET IP Videoconferencing
• H.323 Architecture Group– Report and recommendations
• Budget approval– EU Procurement for centralised service
components
• Pilot Activities – Welsh Video Network
Recent IP Videoconferencing Work
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27th October 2002 IP VC on JANET Slide 7
Overview of JANET IP Videoconferencing
• Service aimed at all organisations with direct connections to JANET– 800+ HE, FE & Research Council
• Open to all endpoints subject to passing a QA test– “Endpoints” are mostly VC studios– “Desktops” can apply to register
Service target
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27th October 2002 IP VC on JANET Slide 8
Overview of JANET IP Videoconferencing
• Centralised Service
• MCUs, Gateways and Gatekeepers
• Equipment located in Core Points of Presence (CPoPs) and on JANET
• Conference Booking System
• Management and advisory service
• Security and resilience
Service Architecture
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27th October 2002 IP VC on JANET Slide 9
Overview of JANET IP Videoconferencing
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27th October 2002 IP VC on JANET Slide 10
Overview of JANET IP Videoconferencing
• Two Accord MGC 100 MCUs
• International Gatekeepers (Cisco MCM)
• National Gatekeepers (Cisco MCM)
• MCU Gatekeepers (Cisco MCM)
Results of Procurement
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27th October 2002 IP VC on JANET Slide 11
Overview of JANET IP Videoconferencing
• Can support:– 48 IP sites @ 2 Mbit/s IP– 64 sites @ 384k ISDN
• Full Gateway capabilities between IP and ISDN
• Full inter-operation between different audio and video protocols - real time trans-coding
Accord MGC 100 MCU/Gateway
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27th October 2002 IP VC on JANET Slide 12
Overview of JANET IP Videoconferencing
• Three levels of Gatekeeper:– International (resilient)
– National (resilient)
– Site
– supports Global Dialling Scheme
• Collaborative effort– European NRNs and ViDeNet adopting same
Gatekeeper Hierarchy and Global Dialling Scheme
Service Gatekeeper Hierarchy
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27th October 2002 IP VC on JANET Slide 13
Overview of JANET IP Videoconferencing
• CODECs capable of initiating calls at speeds between 384kbit/s & 2 Mbit/s IP
• Implement a local gatekeeper– can register with centralised JANET site gatekeeper(s)– Interim measure
• Proxy server or H.323 aware firewall for security• Suitably provisioned JANET Access ( i.e. enough
bandwidth– Force a full-duplex ethernet LAN infrastructure: auto-
negotiation does not work
JANET recommendations to sites
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27th October 2002 IP VC on JANET Slide 14
Overview of JANET IP Videoconferencing
Core Campus Switch
Institutional Endpoint
SD
Institution Access Router
SD
CI SCO YS T EM SS
PIX Firewall SERIES
SD
Internal router
To MAN / JANET
Institution Firewall
SD
3524 Switch
Studio
Institutional EndpointInstitutional Endpoint
H.323 Gatekeeper/Proxy
Cisco Multimedia Conference Manager (MCM) 366x
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27th October 2002 IP VC on JANET Slide 15
Overview of JANET IP Videoconferencing
• Sites must be fully QA tested
• Separate QA Testing for IP and ISDN
• Sites must be registered with a gatekeeper
• Conferences must be booked using the JANET Booking System
Site Service Usage Requirements
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27th October 2002 IP VC on JANET Slide 16
Overview of JANET IP Videoconferencing
Service Management
• Central management service
• Booking system operation and development
• Conference scheduling and equipment configuration
• QA testing service
• Advice and consultancy service for the community
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27th October 2002 IP VC on JANET Slide 17
Overview of JANET IP Videoconferencing
• QA Tests to check all registered sites.– Mix of objective & subjective AV quality checks
• Initiated with the ISDN video service– Made a big difference as quality improved during the
service roll-out
• Audio and Video can be compared to standard benchmarks
• Tests include: echo cancellation quality, ambient noise levels, line noise, audio levels, video jitter, video pixellation
QA Testing
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27th October 2002 IP VC on JANET Slide 18
Overview of JANET IP Videoconferencing
QA testing - 2
• Repeated every 6 months or so– Systems which pass remain registered– Systems which fail
• Advice offered by testers
• Deeper problems/issues passed to VTASconsultancy service for investigation
• Users can provide anonymous feedback– Identify poor sites and trigger QA tests
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27th October 2002 IP VC on JANET Slide 19
Overview of JANET IP Videoconferencing
• Developed in-house for ISDN/ATM service• System has been further developed to add IP
bookings.– Some 300 sites registered– Approximately 90% are “studios”
• Automated booking – manual resource scheduling checks and configuration
• Aim for more automated resource scheduling in future– Accommodate Ad-hoc bookings– Currently needs ~24hours notice
JANET Videoconferencing Booking System
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27th October 2002 IP VC on JANET Slide 20
Overview of JANET IP Videoconferencing
• Contract was placed for major service components 14th June 2002
• Pilot started September 2002
• Full Service 2003
Timescales
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27th October 2002 IP VC on JANET Slide 21
Overview of JANET IP Videoconferencing
• Real time applications benefit from QoS
• UKERNA QoS project
• Prototyping QoS mechanisms on JANET
• IP Premium using Diff Serv EF
• QoS must to be End to End
Quality of Service
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27th October 2002 IP VC on JANET Slide 22
Overview of JANET IP Videoconferencing
• VIP Projecthttp://www.ja.net/development/video/vip/reports/
• H.323 Architecture Group Reporthttp://www.ja.net/development/video/arch/
• Pilot Informationhttp://www.ja.net/development/video/pilot/announcement/html
Further Information
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27th October 2002 IP VC on JANET Slide 23
Overview of JANET IP Videoconferencing
Roger BolamVideo Development Engineer
UKERNA
Email [email protected]
Contact Details for Further Information