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Videoconferencing in Europe

Videoconferencing in Europe. Steve Williams WVN Team Leader s.r.williams@swansea.ac.uk www.wvn.ac.uk www.rhfc.ac.uk. Aim: Provide a leading edge videoconferencing network across HE & FE in Wales with existing technology Funded by ELWa, managed by UKERNA

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Videoconferencing in Europe

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  1. Videoconferencing in Europe Steve Williams WVN Team Leaders.r.williams@swansea.ac.uk www.wvn.ac.uk www.rhfc.ac.uk

  2. Aim: Provide a leading edge videoconferencing network across HE & FE in Wales with existing technology Funded by ELWa, managed by UKERNA IP Pilot runs until August 2002 Gatekeepers 2/3 installed & configured & completed by end May Reliant on MAN rollout for final gk tweaking and adoption of studios into service Pilot conferences running Will use IP Premium service in SWMAN and SJ4 WVN IP Pilot

  3. UKERNA VIP Demo project UK H.323 Architecture Group UK H.323 Implementation Group QoS Thinktank report Other GEANT Deliverables on IP Premium Service Terena TF-NGN & TF-Stream Internet 2 community Previously on IP…

  4. Video Surfnet, HEAnet, DFN, Switch, Nordunet, GRNet, UKERNA… VoIP/IPTelephony Surfnet, CESNET, DFN… WVN IP Translation Pilot Welsh VoIP/IPTel working goup VoIP/IPTel may be keystone Wales has infrastructure in place European Context

  5. aarnet 5000 calls/day in 2000 ViDeNet 100+ H.323 Zones registered Others

  6. European Dialling Scheme New name - Global Dialling Scheme Surfnet, HEAnet, UKERNA World gatekeeper hierarchy hosted in UWSwansea NASM Surfnet, HEAnet, UKERNA, aarnet, ViDeNet & others TF-Stream – renamed? Video Streaming, Videoconferencing, VoIP/IPTelephony IPTel Cookbook Coordination

  7. World Gatekeeper

  8. Netherlands Ireland Switzerland UK Germany Australia ViDeNet World Gatekeeper

  9. GÉANT Why now?

  10. SJ4 2.5Gbps to GÉANT 2.5Gbps UK core - 10Gbps soon 622Mbps to Abilene 622Mbps and 2.5Gbps access links to NW and SWMANs MAN’s Bandwidth available in Wales Why now?

  11. IP Premium Service GÉANT SJ4 Pilot beginning MAN’s gearing up to provide IP Premium Site access router config Core configuration Consistency across whole network Why now?

  12. UKERNA QoS Expression of Interest Welsh Networking Limited & WVN Support Centre - accepted MAN Router configuration Re-marks ALL traffic from campus as IP prec/DSCP 0 Honours all marked traffic from WVN interface Strict priority queuing enabled for DSCP46 May police traffic at ingress – but not shape! QoS

  13. Numeric (E.164) addressing conforming to the Global Dialling Plan will be used All calls to and from site go via the H.323 proxy Mark packets with DSCP value (RFC2598) EF-PHB = 46 Provides a single IP address per institution which will use the Premium IP service Provides security to end-points by hiding end-point IP addresses Can allow the use of private IP addresses Gatekeeper & Proxy

  14. General feeling of IP Videoconferencing It works It doesn’t work It works and then it doesn’t work …VIP Demo, I2 community, Megaconf, TF-Stream It does work if you are careful with packets… WVN IP Pilot & Others

  15. Bandwidth Packet loss 0.25% MAX for MCU calls Jitter (IPDV) Below 20ms One Way Delay (network only) Less than 50ms CODEC delay 100ms + Lipsync buffer + receive buffer + MCU = 250 to 500ms end-to-end delay. Buffers can be tweaked in some end-points Key metrics in VC land

  16. Early 2001 MAN Cisco 7000 in Cardiff overloaded – severe problems with video traffic Later 2001 7000 replaced with temporary 7500 – no problems with video traffic Later that term… Swansea University 7000’s begin to suffer The student effect Our story so far…

  17. Swansea 7000 tweaked – fewer problems Conferences Swansea – Aberystwyth daily - 768 Kbps & 4Mbps Swansea – UWIC – UoG 768K Swansea, Ireland, Netherlands & USA 768K monthly (MCU in Swansea) Swansea, Netherlands, Ireland, USA & Australia 768K (MCU) in USA Aberystwyth – Missouri – How the World Plays (I2) 7200 now installed in Swansea CPU Usage  …

  18. CPU usage

  19. WVN Availability & action Automatic e-mail of : lost link, connection failure, reboot etc. to WVN staff Cisco IPM – gatekeeper to gatekeeper Pseudo video and voice traffic – loss, jitter, delay RTT monitor MRTG based ‘weather map’ Agilent Advisor Live monitoring of real traffic: jitter, loss It’s all about monitoring…

  20. It’s all about monitoring…

  21. It’s all about monitoring…

  22. UDP traffic suffers first Know your network and engineer it well Link usage CPU usage on switches and routers Packet loss Delay Jitter Lessons

  23. MAN router & link upgrades take place IP Premium service Widen IP Pilot activities to whole community Welsh Translation Project Welsh over IP – interested in participating? Terena VoIP group WVN Conference Teaching and learning with Videoconferencing 19th April 2002, University of Wales Aberystwyth Next…

  24. Questions?Interested in Welsh Translation Pilot or VoIP/IPTel?Please Contact me…Steve WilliamsUniversity of Wales Swanseas.r.williams@swansea.ac.uk

  25. WVN QoS MAN QoS WVN Studio SWMAN / NWMAN WVN Gatekeeper/proxy WVN Switch H.323 only MAN Access Router 4 ports Remote Campusswitch/router Campus core switch/router Campus QoS VLAN & queuing WVN Studio WVN Studio Institution Network Topology Firewall

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