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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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slide1

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

agenda
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
multimedia services x media processing
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
services traditional approach
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

services decomposed approach
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

layered architecture for services
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)

ngn generic architecture
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

non decomposed architecture
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

ims architecture

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)

service building blocks
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

play record transcoding
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

conferencing continuous presence
Conferencing - Continuous Presence
  • Supports participants with
  • Different codecs (transcoding)
  • Different bit rates, frame rates, screen sizes (rate matching)
conferencing voice activated switching
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

3g 324m in gateway
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

3g 324m in media server
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

video service delivery platform
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

media processing chain
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

media server control protocols
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
sip or h 248 for media server control
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

summary
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