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IP Solution Architectures for Deploying Video Services (SP-08) IP Media Servers for Multimedia

Carrier Class IP Media Servers. CMS-1000 Media Server. IP Solution Architectures for Deploying Video Services (SP-08) IP Media Servers for Multimedia Garland Sharratt VP Partner Development & Chief Architect gsharratt@convedia.com. CMS-6000 Media Server. Presentation – 35 minutes

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IP Solution Architectures for Deploying Video Services (SP-08) IP Media Servers for Multimedia

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  1. Carrier Class IP Media Servers CMS-1000 Media Server IP Solution Architectures for Deploying Video Services (SP-08) IP Media Servers for Multimedia Garland Sharratt VP Partner Development & Chief Architect gsharratt@convedia.com CMS-6000 Media Server

  2. Presentation – 35 minutes Why use media servers Multimedia services Media processing Architectures Why decompose / layer NGN architecture H3323 MCU / non-decomposed IMS architecture Service building blocks Building Blocks Play/Record & Transcoding Conf. - Continuous Presence Conf. - Voice Activated Switch'g 3G-324M - two models Video service delivery platform Multimedia file gateway Controlling media servers IMS media processing chain Control protocols SIP compared to H.248 Example call flow Using a MS for enhanced video conferencing Q&A – 10 minutes Agenda

  3. Multimedia Services Video announcements for greetings, branding, advertisements, ... Video information portal Video auto-attendant Video call center Video messaging, videomail Video ringback tones Video conferencing Video network gaming Multimedia Building Blocks Play Record DTMF Conferencing – Switching Conferencing – Mixing Titles, Borders, Cropping, ... (Transcoding, Rate matching) Multimedia Services x Media Processing

  4. Services – Traditional Approach Video Conferencing Mobility (Find Me) Services Node Prepaid/Recharge Service Node Speech Portal Service Node Conferencing Service Node Voicemail Service Node • Services typically tied to access network • Each new service required the provisioning of new hardware and software • Hardware and software was sold as a service node by one vendor, typically a proprietary solution deployed as a silo • Service node approach was necessary in 90's but in retrospect resulted in lots of infrastructure duplication and associated capex/opex cost Conferencing Software SUN Card + DSP Cards + TDM Interface Cards Embedded in a Compact PCI Chassis Proprietary, MonolithicSystem with software and Media processing hardware, e.g., MCU OS2 Based PC NT Server+ ASR Software + PCI DSP +TDM Boards SUN Workstation with PCI DSP and TDM boards Proprietary Proprietary Proprietary Audio Bridge TDM and DSP Boards in VME Chassis Legacy TDM Network

  5. Services – Decomposed Approach Conferencing Software Messaging Software Class 5 Softswitch Software MobilitySoftware Speech PortalSoftware Prepaid/RechargeSoftware • Services are introduced and delivered through a software defined network • Service composed from best of breed software and media processing hardware • Open standards interfaces • Service logic executes on off-the-shelf servers • Media processing hardware is shared by many services Common Infrastructure IP Media Server IP/MPLSBackbone Sessioncontrol Media Gateway Legacy TDM Networks

  6. Layered Architecture for Services Conferencing Videomail Voicemail IP Centrex IP PBX Calling Card Push to Talk Hosted Services Application Server Call Center Speech Portal Ringback Network Gaming Collaboration Enhanced multimedia services layer (mobile) VoiceSoftswitch Signaling Layer Basic voice services Session Border Controller Media Server MediaGateway Traffic Processing Layer (inspect, process, adapt, convert,…) Transport Layer - IP/MPLS (routing/switching)

  7. NGN Generic Architecture IP Service Core SIP, H.323, MGCP, MEGACO IP Access SS7 "Softswitch" Application Servers PSTN Access IP Phone SIP, H.323 Speech Server Phone SIP/VoiceXML, MSML/MOML MGCP, MEGACO PDA/3G Phone MRCP MGCP, MEGACO Content Storage HTTP,NFS Cell Phone PC TDM RTP RTP Media Gateway RTP Media Server RTP Peer Network Session Border Controller

  8. Non-Decomposed Architecture IP Service Core H.323 IP Access "Softswitch"/Gatekeeper SS7 PSTN Access IP Phone Phone H.323 PDA/3G Phone MGCP, MEGACO Cell Phone PC TDM RTP RTP Media Gateway RTP H.323 MCU RTP Peer Network Session Border Controller

  9. Mp (SIP, NETANN, VoiceXML, MSML) Mb (RTP) Mb (RTP) Mb (RTP) Mb (RTP) CSCF MRFC MGCF MRFP MGW GGSN SGSN RNC IMS Architecture IP Multimedia Subsystem Services Layer AS AS AS ApplicationServers SCIM Call StateControl Function Home Subscriber Service Control Layer HSS Multimedia Resource Function Controller Media GatewayControl Function Multimedia Resource Function Multimedia ResourceFunction Processor Transport &Endpoint Layer MediaGateway Internet/Intranet IP Wireless(3G, WiFi, WiMax) Legacy Wireline(PSTN) Legacy Wireless(PLMN, 2G/2.5G) IP Wireline(DSL,Cable)

  10. Service Building Blocks Application Server AS Service Specific Logic Call Signaling Billing Interface SIP SIP Service Managementand Provisioning Service Databases Service Creation SIP S-CSCF SIP Media Resource Broker MRB MRF selection/virtualization SIP/ H.248 Multimedia Resource Function (Processor) Audio Tones & Announcements DTMF Detection & Generation Audio Bridging & Mixing Audio Recording & Playback Fax Detection & Processing Hot Word Spotting SpeechRecognition Text to Speech RTP MRF/MRFP Video Announcements Video Bridging & mixing Video Recording & Playback Video Switching A&V Codecs Video EnhancedProcessing Video Transcoding Audio Transcoding

  11. Play/Record & Transcoding Play / Record Audio: G.711 Audio: AAC Video: H.263 Video: MPEG4 RTP NFS/HTTP Content Storage Media Server Transcoding Audio: G.711 Audio: AAC Video: H.263 Video: MPEG4 RTP RTP Media Server

  12. Conferencing - Continuous Presence • Supports participants with • Different codecs (transcoding) • Different bit rates, frame rates, screen sizes (rate matching)

  13. Conferencing - Voice Activated Switching Application Server RTP RTP Previous speaker Current speaker Everyone sees current speaker. Option: current speaker sees previous speaker RTP RTP Codec, rate, fps, bit rate must match Terminals must support I-Frame requests

  14. 3G-324M in Gateway Application Server 324M processing SIP (control) SIP (signaling) SIP PLMN IP/IMS RTP PRI/BRI/ISUP SIP / 324MGateway SIP RTP Mobile phonewith 324M Regular RTP processing Example: Dilithium Networks DTG 2000 Convedia Media Server

  15. 3G-324M in Media Server Application Server Transparent pass-through SIP (control) SIP (signaling) PLMN IP/IMS PRI/BRI/ISUP AnyGateway SIP SIP 64k Mobile phonewith 324M 324M processing Example: Dilithium Networks DTG 2000 Convedia Media Server

  16. Video Service Delivery Platform Application Server SIP Multimedia content sources File File File Multimedia File Gateway File Terminal File server (video/audio file storage) e.g., web server for PC access to files, or MMS gateway for mobile phone access to files Wireline or wireless SIP / H.248 File Media Gateway CS terminal TDM RTP Media Server Wireline or wireless RTP IP terminal Wireline or wireless

  17. Media Processing Chain Service logic, signaling AS SIP SIP SIP SIP S-CSCF MRF selection/virtualization MRB SIP SIP UA Protocol conversion (Call Detail Records) MRFC H.248 MRF RTP MRFP Media processing

  18. Media Server Control Protocols AS Service logic, signaling SIP S-CSCF/ "Softswitch" SIP SIP MRB MRF selection/virtualization SIP SIP UA Protocol conversion (Call Detail Records) MRFC SIP + Netann + XML (e.g., MSML/MOML) H.248 MRFP MRF Media processing • Simple processing,e.g., PSTN Emulation • "Mobile softswitch" use • Complex processing,e.g., enhanced services • Application server use • "Mobile softswitch" use

  19. SIP > H.248 Application servers already have SIP stack for signaling, have no use for H.248 Powerful SIP service creation capabilities: VoiceXML, proxies, routing, security, etc. SIP skills and tools more widespread than H.248 skills and tools Many service providers want to simplify networks, reduce number of protocols SIP is only common protocol for MS control between all NGN architectures H.248 > SIP Currently ahead in standardization due to reusing MG specification work SIP or H.248 for Media Server Control Application Server(s) Signaling SIP or H.248??? IP Network RTP IPMediaServer

  20. Call Flow Example: Enhanced Video Conf.

  21. Summary • Multimedia services need media processing • IMS is decomposed into functional components • Media server is a key reusable IMS component • Media servers offer building blocks • Two media server control options • MRFP -- H.248 interface • Simple processing • MRF -- SIP interface • Enhanced processing • Media server > H.323 MCU

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