Media Server for the Mobile Networks

Chanh Phung

Agenda• Mobile Networks and Enhanced Services:

Today• Mobile Networks and Enhanced Services

Evolution• 3GPP and Media Server• Conclusion

Mobile Networks and Enhanced Services: Today

Enhanced Services for Mobile Networks: Today

PSTN

IP DataNetwork

PSTNUsers

Wireless

PRI

SS7SS7

POP/DATA Center

MessageStore

IVR

SMPP

ContentServer

Enhanced Service for Mobile Networks: Today

Currently offered:• Voice Activated Dialing (VAD) – Robust VAD offering with both

Telephone and GUI access• Voice Navigation of Voice Mail – Expanded Capabilities include Call

Sender Rebound, DNP and Ability to View Emails From a GUI• Voice Enabled Unified Messaging – (Ability to Manage Multiple Emails,

Voice Mails, Faxes, PIM functions from both GUI and TUI and SMS alerts)• Corporate data access: Email, Contacts, Tasks and Calendar• Voice Browsing of Content (Either HA or WAP Integration)• GUI, TUI and WAP accessMarket needs:• Offer revenue-generating services with the new capabilities on handset:

camera, MP3, SMS/EMS/MMS, etc.• An open architecture:

– Best-of-breed– Application developers to focus on protocol-independent services and

infrastructure vendors to integrate disparate technologies.

Mobile Networks and Enhanced Services Evolution

Enhanced Services the Ultimate Objective

Auto AttendantMid Call Trigger

Services

Unified MessagingPresence based

Web enabled AudioConference Bridge

Messaging Services

Messaging Services

Conferencing Services

Conferencing Services

Voice Recognition Services

Pre-Paid calling card,

Announcements, IVR

Call Centers,

Voice Portals

Intelligent Call Screening

Authenticated,* Secure,Web based collaborative,

voice and video conferencing

Authenticated,* Secure,Web based collaborative,

voice and video conferencing

Voice only conference bridge

Voice only conference bridge Simple voice mailSimple voice mailConsumer

(cost/scale)

Enterprise(Value)

Govt./Private(Customized)

Authenticated,* emergency triggered persistence messaging

Security ServicesSecurity Services

Monitor & RecordMonitor & Record

Voice VPNs, Deep Packet inspection

Voice VPNs, Deep Packet inspection

CALEA*, similar Govt. functions

CALEA*, similar Govt. functions

Resource Allocation Layer (Patented) Media Server Platform

(Multi-Service, Dynamic Session Control, Scalable, Carrier-class, Standards Based)

Enhanced Services: Building Blocks

• Support several thousand ports

• Multiple Applications

• Open Architecture

• Partitionable

• Carrier Class

Web BrowsingSecurity

Bridging &Mixing

VoiceRecognition

Authentication

Parsing of Commands

Tone Detection& Generation

Profile Creation/Status Trigger

Collaboration

Store & Retrieve

Presence

Text-to-Speech

Harmony6000 Media Server

MessagingConferencing

Auto-AttendantTele-browsingCalling CardCall Centers...

SIPMGCP

VoiceXML

Media Server for the VoIP Network

PSTNMedia

GatewayCustomer Premise

Media ServerMedia Server

IADIADIPNetwork

PSTNUsers

SoftSwitch

SoftSwitch

RTP/SIP /MGCP

Wireless

Feature &Application

Servers

Feature &Application

Servers

NAS

AnnouncementsIVR ServicesConferencing

Audio ProcessingText-to-Speech

Speech RecognitionVoiceXML...

AnnouncementsIVR ServicesConferencing

Audio ProcessingText-to-Speech

Speech RecognitionVoiceXML...

MUXMUXAccessNetwork

SignalingGateway

SIP MGCP

SIP-TSS7

RTP

SIP/MGCP

TDM

Media Server Evolution

1st generationSoftware/PC-based

• Built from Intel servers, and Dialogic/NMS cards

• Vendors:– Atelo, inPact– Application

vendors (Broadsoft, Pactolus, Sylantro, Tekelec, etc.)

• Advantages! Low-end, low-cost

• Disadvantages" Not carrier-class" Scale up to 100-

200 channels only" Reliability an issue" ASR/TTS requires

too many boxes" Software-based

solution does not support conferencing

2nd generationCompactPCI-based

• Build from off-the-shelf components

• Vendors– Think Engine– Application

vendors (VocalData, Nortel, Lucent, etc.)

• Advantages! Low development

efforts• Disadvantages

" Not carrier-class" Scale up to

hundreds of channels only

" Reliability an issue

3rd generationCarrier Grade! Carrier-class! 99.999% reliability

and availability! Scale up to thousands

of voice channels !host multiple applications on the same platform

! Sustain high call rate! Plug-and-play

platform !manageability

! Built-in building blocks ! reusability

! Open, standardized interfaces !interoperability

! Fully integrated !manageability

4th generationStandard Hardware! Carrier-class! 99.999% reliability

and availability! Scale up to thousands

of voice or video channels ! host multiple applications on the same platform

! Sustain high call rate! Plug-and-play

platform !manageability

! Built-in building blocks ! reusability

! Open, standardized interfaces !interoperability

! Fully integrated !manageability

! Industry standard hardware sources

! Ongoing cost optimization

3G network and Media Server

Iu_CS

UMTS R2000 Reference Architecture

GfGi

Iu

GiMr

Gi

Ms

Gi

R Uu

Gn

Gc

Signalling and Data TransferInterface

Signalling Interface

TE MT UTRAN

Gr

SGSN GGSN

EIR

MGCF

R-SGW *)

MRF

MultimediaIP Networks

PSTN/Legacy/External

Applications &Services *)

Mm

Mw

LegacyMobile signalingNetwork

Mc

Cx

AlternativeAccessNetwork

Mh

CSCF

CSCF

Mg

T-SGW *)

T-SGW *)

HSS *)

HSS *)

Applications& Services *)

MSC server GMSC server

McMc

D C

SCP

CAP

MGWNb

Nc

Iu

Iu

R-SGW *)Mh

CAPCAP

PS_DOMAIN

CS_DOMAIN

Separated and independently evolve CS and PS DOMAINS

MGW

MRF detailed view

SCP

MPTY- CS MPTY- IM Others

OSS

NOC

BILLING

MGW

LEA

PSTN

Gi

IP/ATM

CAP/CAMEL PH1-3PARLAY/OSA or SIP API

CLEA

IP/AT

TDM

ANSI/ITU C7

ISUP & MAP

CDRs

CMIP/SNMP

Operator I/F

R/T-SG

IM

OMC-S

Billing Server

MRF in PS DomainMRF OAM&P

MEGACO/H.248

Gi

Mr

PSTN

TDM

GGSN

FEATURE SERVER

IP/ATM

Gi

MGCF CSCF

MRF-C

MRF-P

MRF 3GPP Requirements• Support UMTS MRF specification -

TS 23.002-570– Performs multi-party call and multi-

media (audio, video, text) conferencing functions.

– provide tones and announcements function

– Interface with CSCF for call control between mobile subscribers or between mobile subscribers and PSTN endpoint.

• Support Interfaces– Mr (CSCF ⇔ MRF): SIP as

specified in the TS 23.002-570– Gi (MRF ⇔ External Data Network):

RTP(RTCP)/UDP/IP• Support LAES*: support the

interception of multi-party sessions (3GPP TS 33.107-530, ETSI 201 671 edition 2 and TIA's J-STD-25A).

• Support multi-party conference– Support Multi-party

call/session for both IP Multimedia (IM) and CS_Domain.

– Support OSA/Parlay* TS 22.127-540

– Support draft-rosenberg-sip-conferencing-models-00.txt

• Support QoS Signalling at Different Bearer Service Control Levels (3GPP TS 23.228-550*):

– At call setup– Restricted Resource Access– Dynamic QoS Negotiation and

Resource Allocation– Prevention of Theft and Denial

of Service

MRF 3GPP Requirements• Support tones and announcements to enable enhanced value-added

services:– Basic/Standard tones and announcements : country and regional specific

tones and announcements– IP based Interactive Voice Response (VoIP IVR)

• Announcement IVR (for wrong numbers, network congestion, service changes, etc.)• Authorization IVR (for calling cards, ordering, billing, access, and security

applications, etc.)• Auto Attendant IVR• Voice Mail IVR

– Multi-lingual support – Automatic Speech Recognition (ASR)– Text to Speech (TTS)

Programmability at MRF-C

Con

fere

nce

Brid

ge

Voi

ce m

ail/U

M

Java Framework (JSLEE, JCC, JCAT)

Cus

tom

app

licat

ions

SIP MGCP

Parlay SCFIP Unity API

Net

wor

k M

anag

emen

t & S

NM

P

From CSCF To MRF-P

XMLBrowser

Parlay API

Fetch XMLscript from server

Summary• As the networks evolve the recurring theme of

Decomposed Network Architecture also applies to the Mobile Network

• In a decomposed architecture, MS plays an important role to enable both the present day and future enhanced services

• Carrier grade, High Density, Scalability, integration of disparate technologies are absolute requirements for this element

• With the advent of 3G network the packet based MS have natural fit to provide the MRF set of functions.