Carrier Class IP Media Servers CMS1000 Media Server

Carrier Class IP Media Servers CMS-1000 Media Server CMS-6000 Media Server Introduction to IMS (IMS-01) IP Media Servers in IMS: MRF and MRFP Garland Sharratt VP Partner Development & Chief Architect gsharratt@convedia. com

Services – Traditional Approach Conferencing Service Node Conferencing Software Proprietary Voicemail Service Node MSC (announcements) SUN Card Proprietary, Monolithic + DSP Cards System with software + TDM Interface Cards and Media processing Embedded in a hardware Compact PCI Chassis Mobility (Find Me) Services Node Prepaid/Recharge Service Node Speech Portal Service Node SUN Workstation with PCI DSP and TDM boards OS 2 Based PC NT Server + ASR Software + PCI DSP +TDM Boards Proprietary Audio Bridge Proprietary TDM and DSP Boards in VME Chassis Legacy TDM Network § § 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

Services – Decomposed Approach Conferencing Software Messaging Software Class 5 Softswitch Software IP/MPLS Backbone Session control Media Gateway Common Infrastructure IP Media Server Mobility Software § § § Legacy TDM Networks Prepaid/Recharge Software Speech Portal Software 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 offthe-shelf servers Media processing hardware is shared by many services

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

IMS Architecture - Media Processing Services Layer IP Multimedia Subsystem AS AS AS Control Layer SCIM Home Subscriber Service Transport & Endpoint Layer Media Gateway Control Function Media Gateway HSS Call State Control Function CSCF MRFC MGCF MGW Application Servers Multimedia Resource Function Controller Mp (SIP, NETANN, Multimedia Voice. XML, MSML) Resource Function Multimedia Resource Function Processor MRFP Mb (RTP) RNC Legacy Wireline (PSTN) Mb (RTP) Legacy Wireless (PLMN, 2 G/2. 5 G) IP Wireline (DSL, Cable) GGSN Internet/ Intranet SGSN IP Wireless (3 G, Wi. Fi, Wi. Max)

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

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

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

Summary § § IMS is decomposed into functional components, IP media server is a key reusable IMS component Media servers offer building blocks Two media server control options o MRFP -- H. 248 interface • Simple processing o MRF -- SIP interface • Enhanced processing