Transcript 20021027-ITF

Overview of JANET IP Videoconferencing
IP Videoconferencing on JANET
Internet2 International Task Force
Internet2 Member meeting
27th October 2002
27th October 2002
IP VC on JANET
Slide 1
Overview of JANET IP Videoconferencing
Report: David Salmon
UKERNA
Slides: Roger Bolam
Video Development Engineer
UKERNA
27th October 2002
IP VC on JANET
Slide 2
Overview of JANET IP Videoconferencing
Outline
• Background to JANET Videoconferencing
• IP Videoconferencing Pilot
• Service Components and Capabilities
27th October 2002
IP VC on JANET
Slide 3
Overview of JANET IP Videoconferencing
History of Videoconferencing Services on JANET
• 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
27th October 2002
IP VC on JANET
Slide 4
Overview of JANET IP Videoconferencing
Drivers for IP Videoconferencing Service
• 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
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IP VC on JANET
Slide 5
Overview of JANET IP Videoconferencing
Recent IP Videoconferencing Work
• H.323 Architecture Group
– Report and recommendations
• Budget approval
– EU Procurement for centralised service
components
• Pilot Activities – Welsh Video Network
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IP VC on JANET
Slide 6
Overview of JANET IP Videoconferencing
Service target
• 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
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IP VC on JANET
Slide 7
Overview of JANET IP Videoconferencing
Service Architecture
• 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
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IP VC on JANET
Slide 8
Overview of JANET IP Videoconferencing
27th October 2002
IP VC on JANET
Slide 9
Overview of JANET IP Videoconferencing
Results of Procurement
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Two Accord MGC 100 MCUs
International Gatekeepers (Cisco MCM)
National Gatekeepers (Cisco MCM)
MCU Gatekeepers (Cisco MCM)
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IP VC on JANET
Slide 10
Overview of JANET IP Videoconferencing
Accord MGC 100 MCU/Gateway
• 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
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IP VC on JANET
Slide 11
Overview of JANET IP Videoconferencing
Service Gatekeeper Hierarchy
• Three levels of Gatekeeper:
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International (resilient)
National (resilient)
Site
supports Global Dialling Scheme
• Collaborative effort
– European NRNs and ViDeNet adopting same
Gatekeeper Hierarchy and Global Dialling Scheme
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IP VC on JANET
Slide 12
Overview of JANET IP Videoconferencing
JANET recommendations to sites
• 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: autonegotiation does not work
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IP VC on JANET
Slide 13
Overview of JANET IP Videoconferencing
SD
Institution Access Router
To MAN / JANET
SD
C I S C OS Y S T E M S
PIX Firewall SERIES
Institution Firewall
SD
Internal router
H.323
Gatekeeper/Proxy
Cisco Multimedia
Conference Manager
(MCM) 366x
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IP VC on JANET
Slide 14
Overview of JANET IP Videoconferencing
Site Service Usage Requirements
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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
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IP VC on JANET
Slide 15
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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IP VC on JANET
Slide 16
Overview of JANET IP Videoconferencing
QA Testing
• 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
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IP VC on JANET
Slide 17
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 VTAS
consultancy service for investigation
• Users can provide anonymous feedback
– Identify poor sites and trigger QA tests
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IP VC on JANET
Slide 18
Overview of JANET IP Videoconferencing
JANET Videoconferencing Booking System
• 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
27th October 2002
IP VC on JANET
Slide 19
Overview of JANET IP Videoconferencing
Timescales
• Contract was placed for major service
components 14th June 2002
• Pilot started September 2002
• Full Service 2003
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IP VC on JANET
Slide 20
Overview of JANET IP Videoconferencing
Quality of Service
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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
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IP VC on JANET
Slide 21
Overview of JANET IP Videoconferencing
Further Information
• VIP Project
http://www.ja.net/development/video/vip/reports/
• H.323 Architecture Group Report
http://www.ja.net/development/video/arch/
• Pilot Information
http://www.ja.net/development/video/pilot/announc
ement/html
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IP VC on JANET
Slide 22
Overview of JANET IP Videoconferencing
Contact Details for Further Information
Roger Bolam
Video Development Engineer
UKERNA
Email [email protected]
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IP VC on JANET
Slide 23