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IMS – The future of Fixed Mobile Convergence EduCause. Walt Magnussen Ph.D. 12 October, 2010. Current Situation. Landline Fixed device (with the exception of nomadic VoIP devices Dedicated telephone number Voice Mail often with Unified messaging Usually not location aware Cellular Phone - PowerPoint PPT Presentation
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Current Situation
• Landline– Fixed device (with the exception of nomadic VoIP devices– Dedicated telephone number– Voice Mail often with Unified messaging– Usually not location aware
• Cellular Phone– Mobile device– Dedicated telephone number– Voice Mail without Unified messaging– Location aware
Early attempts at FMC
• PBX control – trombone trunked
• SS7 gateways (Tango networks)
• Carrier provided
Cellular networks working through the generations
• 1G – Analog Voice only• 2G – GSM, CDMA, up to 20 Kbps Voice and
Data• 2.5G CDMA2000, EDGE, GPRS up to 384
Kbps. Web browsing, MMDS, location services• 3.0G CDMA 2000 and 3000, UMTS up to 3.1
Mbps. Full motion video, streamed video, 3D gaming
4G networking
WiMax – Sprint Limited markets now
LTE – AT&Tand Verizon Wireless begin 2010
Bandwidth 100+ Mpbs
Applications - All of the above Plus:High quality video streaming
High quality video conferencing
High quality Voice Over IP
4G is built upon IMS architecture
IP Multimedia Subsystem
• Developed by 3GPPP
• Uses SIP signaling
• FMC is based upon concept of Home and Visiting networks
IMS Nodes
• SIP Proxies– S-CSCF – Network Controlling Proxy– P-CSCF – Border SIP Proxy– I-CSCF - Interrogating SIP Proxy
• Location nodes– HSS Function of HLR and VLR– SLF – Maps current IP address to
User/Application.
IMS nodes continued
• Gateway nodes– BGCF – Border Gateway Control Function– MGCF – Media Gateway Control Function– MGW – Media Gateway– SGW – Signaling Gateway
• Media Control– MRFC – Media Control– MRFP – Media Proxy
IMS nodes continued
• Application Servers (can either be home or visiting network– SIP AS– OSA-CSC– IM-SSF
Examples of Applications
• Carrier– GPS Directions– On line games– Video on Demand
• University– Blackboard access– Emergency Notification– Library and other controlled access systems– VoIP over campus WiFi
Integration of Systems
• Campus Presence Server with HSS
• Campus VoIP Proxy with Wireless network– One number dialing– Integration of Voice Mail Systems
• Direct campus access to billing systems
• Negotiating QoS
Preparing your campus for IMS
• Consider DAS system (if appropriate)
• Student/Faculty discount programs with carriers
• Understand the architecture and ready applications for access
The future of Emergency Communications
• FCC Initiatives– CSRIC - Traffic Prioritization, CAP and other working
groups– ERIC – Public private integration of 700 MhZ LTE
services
• ESI Net initiatives-– It’s more than 911– Campuses will connect– It will probably be IPV6 only
TAMU ITEC Projects
• NSF GOALI solicitation
• Proposing IU-CRC March of 2011
• Network project with Verizon Wireless
• Hope to start in June of 2010
• Stay tuned for more information