2005-06-08 1

Ericsson NGN Solution

Presentation to ALTTC on BSNL Network ModernizationAugust 26, 2006

Pankaj MukhijaPankaj.mukhija@ericsson.com

Jaswant BoyatJaswant.boyat@ericsson.com

2006-08-26 2

Ericsson NGN – overview– Ericsson’s strategy– Next generation network architecture– Engine The Soft Switch Solution for Telephony and Multi-media

NGN Solution – ToIP– Signalling protocols, compression, interoperability and standards– Key issues for Network design – capacity, redundancy , design and

dimensioning– Carrier class Telephony over IP – just VoIP not good enough– Customer Cases– Recommendation for BSNL

Agenda, August 26

2005-06-08 3

Ericsson NGN - overview

Ericsson’s strategy

Next generation network architecture

Engine – The Soft Switch solution for telephony and multi-media

2006-08-26 4

Ericsson’s converged systems architectureLayered architecture based on 3GPP

GSM/EdgePSTN access

IP BB access

WirelineWirelineaccessaccess

IP Core

FixedTelephony

MobileTelephony

InteractiveMultimedia

TeS MSCSrv

PSTNPSTN GSMGSM

3GWLAN

AS-X AS-Y

SIP - interface

Application layer

Control layer

Connectivity layer

Access layer

POTS and multi-media supplied over one broadband access

CDMA2000®

Convergent Servicesover common IP core!

2006-08-26 5

Network overview – voice and data

ISUP

xDSL

H.248 UNI

LegacyCS

PublicEthernet

IP-MSAN

Eth

voice data

MSG/TAG

IP-MSAN

Eth

voice data

IP-MSAN

Eth

MSG/TAG

H.248 CL

VideoSPISP

IP/MPLS

V5.2

IP

IP

National IP

voice & dial-up

H.248 UNISIP

MGW-TAG

H.248 UNI

CE

CO

DEC

IP

TAG

CS

DTSDLS

TeS

AN/RSSAN/RSS

PBXPBXPRA

prop.V5.2

BRASBRAS

BRAS

POTS

2006-08-26 6

Evolution of telephony and multi-media services

LegacyCS

CS

CurrentCS/TDM

Complicated structureAgeing HWGrowing OPEX

LegacyCS

CS

MGW MGW

TGW TeS

H.248

Introduction ToIP

Migrate transit traffic to NGNRehome RSSConvert CSS to RSS

ToIP

ISUP

Other NetworksVoIP

SIP, H.323

BB and multi-media servicesContinued migration class 4 and 5 traffic

POTS+DSL

H.248

POTS

TeS

MGW

TeSMGCF

MGW MGW

SIPH.248CS

SIP

IP

TDM

ISUPToIPMMoIP

IMS

SIP

2006-08-26 7

Evolution of telephony and multi-media services

POTS+DSL

H.248

POTS

TeS

MGW

TeSMGCF

MGW MGW

SIPH.248

CS

SIP

IP

TDM

ISUP

BB and multi-media servicesContinued migration class 4 and 5 traffic

TeSMGCF

IMSSIP

2 to 1 strategy

POTS+DSL

H.248

POTS

AGC

MGW

TeSMGCF

MGW MGW

SIP

H.248 CS

SIP

IP

TDM

ISUP

BB and multi-media servicesContinued migration class 4 and 5 traffic

TeSMGCF

IMS

SIP

2006-08-26 8

SIP/H.323SIP/H.323VoIPVoIP

Wireline IMS architecture

EAB/ OX Lennart Norell

MPLS/ IPPBN Telephony

PSTN

CCS H.248

ISUP

MSG

Broadband access Router/

BRAS

MGC/MGC/SGWSGW

RTP

RTP

RTP

AGCAGC

PBX MSG

EARTDM

TDM

MSAN

H.248

IUA

H.248 (AGW)

RSS

Q.931

V5.2

Telephony provided by IMS also for legacy telephony access

TeSEngine Engine

SoftswitchSoftswitch

DSL

ScenarioScenario

TeSEngine Engine

SoftswitchSoftswitch

MSG

SIP-T

MSG MSG

ISC~SIP

PresenceServer

FeatureServer

SIPSIP

SIP

IMS control

HSS

Diameter

ABG

CSCF SIP

SIP

MRFP

MRFCH.248

SIP-T

SIPSIP-T

SIP

SIP+RTP

IAD

TeSAGC TeSNGC

EngineMultiMedia

2006-08-26 9

Service Network

Evolved telephony based on IMS

SIP CSCFCSCF

P2PP2PMultiMulti--mediamedia

ASASPresencePresence

ASAS

IP access &network

L

DSL

DSL

DSL

MSANMSAN

IMSIMSTeSAGCFAGCFTeSAGCFAGCF

2006-08-26 10

New wireline architecture

MPLS/ IP

TeS

POTS

Multi-media

PSTNPSTN

PublicEthernet

PublicEthernet

PublicEthernet

TeS TeS~101

~102

~106

~103 -104

POTS

MSG/TAG

IP-MSAN

BRASBRAS

2005-06-08 11

EngineThe softswitch solution for telephony and multi-media

2006-08-26 12

Telephony Softswitch Solution (TSS)

TelephonySoftswitch

Telephony Softswitch

Service Control Point (IN)

Local Exchange

Transit Exchange

PBX

Engine Integral - Telephony Softswitch Solution Solution overview and main building blocks

Other Networks

EAR

LE

TE

ApplicationServer

Packet BackbonePacket Backbone

Media Gateway

Media Gateway

IP-MSAN

TeS TeS

Operations and Management

Managem

ent for TSS

Separation of call and connection control

SignallingConnection

2006-08-26 13

Telephony Softswitch Solution (TSS)

TelephonyServer

TelephonyServer

Service Control Point (IN)

Local Exchange

Transit Exchange

PBXPBX

Softswitch – Telephony Server (TeS)

Other Networks TeS TeS

EAR

LE

TE

ApplicationServer

Packet BackbonePacket BackboneMedia

GatewayMedia

GatewayTelephony Server (TeS)Engine Integral SoftswitchCall control & call logic Uses proven TechnologyGlobal Class 4 and Class 5 feature setCarrier Class HW and SW implementation

2006-08-26 14

TelephonyServer

TelephonyServer

Service Control Point (IN)

Local Exchange

Transit Exchange

PBXPBX

Media Gateway – AXD 301

Other Networks TeS TeS

EAR

LE

TE

ApplicationServer

Packet BackbonePacket BackboneMedia

GatewayMedia

GatewayMedia Gateway - AXD 301 Media Gateway for telephony servicesMultiple IP and TDM interface optionsMultiple codec support Carrier Class HW and SW implementation

Telephony Softswitch Solution (TSS)

2006-08-26 15

TelephonyServer

TelephonyServer

Service Control Point (IN)

Local Exchange

Transit Exchange

PBXPBX

Other Networks TeS TeS

EAR

LE

TE

ApplicationServer

Packet BackbonePacket BackboneMedia

GatewayMedia

Gateway

PBN – Cisco Core & Edge RoutersCisco 12000 and CRS-1Provides the IP/MPLS transportCarrier-class implementation meetingthe telephony requirements

Telephony Softswitch Solution (TSS)

PBN – Cisco IP Core and Edge Technology

2006-08-26 16

IP-MSAN

Telephony Softswitch Solution (TSS)

TelephonyServer

TelephonyServer

Service Control Point (IN)

Local Exchange

Transit Exchange

PBXPBX

PSTN access node - Engine Access Ramp (EAR)

Other Networks TeS TeS

EAR

LE

TE

ApplicationServer

Packet BackbonePacket BackboneMedia

GatewayMedia

GatewayEngine Access RampSolution for ISDN and PSTN Copper ConcentrationCarrier Class

2006-08-26 17

Telephony Softswitch Solution (TSS)

Operations and Management

TelephonyServer

TelephonyServer

Local Exchange

Transit Exchange

PBXPBX

Operations and Management – MN OSS

Other NetworksTeS TeS

EAR

LE

TE Packet BackbonePacket BackboneMedia

Gateway Media Gateway

Managem

ent for TSS

MN-OSSNetwork Management and Service AssuranceA complete operational support solution defined specifically for multi-service networksDesigned to improve the solutions performance and reduce cost of operations

EARPacket BackboneMGW MGW

MN-OSS Service Activation

Billing Mediation

EMS

Cisco/Juniper EMS

TeS

2006-08-26 18

Engine Multi-Media Softswitch Solution

2006-08-26 19

Engine Multi-Media network solution3GPP architecture based om IMS

IP ConnectivityIP ConnectivityNetworkNetwork

IPIPAccessAccess

SessionServer

SubscriberManager

ApplicationServers

PSTNPSTN

MGWBRAS

Service

s

Service

s

Home Subscriber Server• Holding user profiles • Authenticating a user• Authorising user requests• Binding a user and a session

Session server (CSCF)• Routing of SIP messages• Triggering of services• Session control function • Bearer authorisation and policing

MediaManager

The MGC/MGW provides:Interworking with ISUP/TDM, SIP & H.323 NWs

Application Layer

Control Layer

Connectivity Layer

2006-08-26 20

Engine multi-media solution - 3GPP architectureDetailed view

Application Layer

Control Layer

Connectivity Layer N

etw

ork

& S

ervi

ces

Man

agem

ent

Provisioning

SNM

ChargingMediation

DNS / ENUM

RTPSIP

UE

RTPABG TDM

SIP

ISUP

MGCP

MGCF/SGSIP

MG

H.323

SIPNBG

SIP

DIAMETER

SIP

HSS

CSCF

CS-AS PS

SIP

CS-MS CS-CS AS

2006-08-26 21

Value of Engine Multimedia

IMS Architecture

• First or second line replacement

• Several phone lines• Video call• Instant messaging• Presence• Buddy lists

IP Telephony• Hosted PBX• One network for voice and data

• Complete service set for the enterprise

• Easy management of subscribers

• Multimedia services

IP Centrex

•The only standardized architecture for SIP based multimedia services •Open architecture – enables multivendor deployment•Modularity – add functionality •Fixed mobile convergence – common core network

IMS Architecture

Engine Multimedia

2005-06-08 22

NGN Solution – ToIP

Signalling protocols, compression, interoperability and standards

Key issues for Network design – capacity, redundancy , design and dimensioning

Carrier class Telephony over IP – just VoIP not good enough

Customer cases

2006-08-26 23

Signalling protocols, compression, interoperability and standards

2006-08-26 24

Telephony Softswitch Solution (TSS)

Local Exchange

Transit Exchange

PBX

Signalling overview in Telephony Softswitch SolutionsBasic operation

Other NetworksPSTN

EAR

AS

Packet BackbonePacket BackboneMedia

GatewayMedia

Gateway

IP-MSAN

Other NetworksVoIP

V5.2

DSS1PRA

ISUP

ISUP

ISUP

SIP, H.323

H.248

H.248/SCTP

TeS TeS

SIP-T/BICCSigtran

LE

TE

AN

PBX

IMS

SIP

Codecs:G.711G.723.1G726G.729

InteroperabilitySIP-T ”ISUP over IP” well defined by IETF RFCH.248 being standardised by ETSI/Tispan

2006-08-26 25

ISUP signalling – two basic alternatives

Channel associated signalling

POI EAR

INAP/CS1

TeSBICC

POI V5.2

SCPSCP

INAP/CS1

MGWMGW

ISUP

MGWMGW

ISUP

RPG

ATM/IP

STP - signalling

POI EAR

TeSBICC

POI V5.2

SCPSCP

MGWMGW

ISUP

MGWMGW

ISUP

RPG

ATM/IP

Secure signalling transportRedundancy

Reduced need of RPG

2006-08-26 26

Ericsson’s view on signalling in NGN

SIP-T or BICC for interconnect with other telephony softswitches (Sigtran)

H.248/SCTP for gateway control

H.248 access signalling for POTS and SIP for multi-media over a common broadband access.

– Operators see H.248 as the “next-gen. V5.2” for VoIP– Based on operator feedback Ericsson has decided to implement

H.248 signaling for POTS, rather than “SIP”

IP-MSAN (AGW) controlled by H.248 (ETSI Tispan)– Implementation in two phases

2006-08-26 27

IP-MSAN in two phases

PSTN/ISDNNetwork

TeSH.248 CL

MSG

IP

H.248 UNI

ABG/TAGEDA Combo

H.248 UNI IP

V5.2

Public Ethernet

phase 1AXE

based on the evolving H.248 standardizationin ETSI Tispan.

H.248 CL

V5.2

Public Ethernet

PSTN/ISDNNetwork

H.248 CL

MSGIP

H.248 CL

MPLS/ IPPBN Telephony

IP to IP gatewayEDA MSAN

phase 2TeS

AGW

AGW

H.248 UNI

H.248 CL

AXE

AXE

2006-08-26 28

Key issues for Network design CapacityRedundancyDesignDimensioning

2006-08-26 29

Redundancy for transit applications

50%

100%

30%

20%

10%

40%

20% 40% 60% 80%

loss

Redundancy

MGWMGW

MGWMGW

LX

MGWMGW

MGWMGW

LX

partitioning

two separate MGW

50%

50% 50%

50%

TeS

TeS

2006-08-26 30

Redundancy for local applicationsTwo options

MSGMSG MSGMSG MSGMSG

TeSTeS “Cold” stand-by

N+1 protection

AdvantagesCost-efficient, 1 redundant TeS can support may working TeS

Option 1: N+1

MSGMSG MSGMSG

TeS

AdvantagesHot stand-by, no traffic disturbance in case of a failure

“Hot” stand-by1+1 protection

Option 2: Mated pair, 1+1

ps

Mated pair

MGWMGWMGWMGW

RSS

Dual-homing

2006-08-26 31

Redundancy for local applicationsTwo options

MSGMSG MSGMSG MSGMSG

TeSTeS “Cold” stand-by

N+1 protection

AdvantagesCost-efficient, 1 redundant TeS can support may working TeS

Option 1: N+1

MSGMSG MSGMSG

TeSAdvantages

Hot stand-by, no traffic disturbance in case of a failure

“Hot” stand-by1+1 protection

Option 2: Mated pair, 1+1

Xdeactivation

activationX

2006-08-26 32

QoS

Availability Network mgmt

Security

It is not only about IP – it is about carrier-class IP

Carrier class IP is about network design and management!

Network architecture

Network economics

6 key issues Guiding principlesNetwork architecture

Multi-service, Multi-vendor Support MPLS/Pure IPSeveral hundreds MGW

QoSMouth-to-ear delay < 150 msecVoice packet loss < 1%MOS-value > 4

Availability – better than “5 nines”Back-up linksLink restoration time < 1 sec

SecurityProtect the telephony nodes from different kinds of attacks

ManagementProactive monitoring of voice traffic in IP network

MOS=Mean opinion score

2006-08-26 33

Packet BackbonePacket Backbone

Media Gateway

Media Gateway

Local Exchange

LE

Prop. delay (5 ms/1000 km)~10 ms (2000 km)+ IP Core network

Encoding delay

Decoding Delay

JitterBufferDelay

LE

Local ExchangeTDM

TDM

IP-MSAN IP-MSAN

Access networkdelay

Access networkdelay

~15 ms

Sampling: 5-20 msEncoding algoritm: ~10 ms ~20 ms

~10 ms (G.711/5 ms)~25 ms (G.729/20 ms)

~15 ms

Mouth-to-ear budget: 100-150 msec

Ethernet Ethernet

Delay budget

Delay contribution from IP-core network could safely be ignored

Our tests average0,650ms12 hops

Allow longer sampling time – if voice quality MOS>4

TeS

2006-08-26 34

Engine Softswitch Networks

your comm

unications

your comm

unications

In commercial service Contract

Contracted In Service

Softswitches 103 69

Media Gateway 316 223

Customers 33 24

2006-08-26 35

Network development - Phase 1ENGINE for the growing interconnect traffic to other operators

TX

TX

LS

TX

TX

LS

Other operators

Other operators

1 2 13

MGWMGW

MGWMGW

TelephonyTelephonyServerServer

MGWMGW MGWMGWMGWMGW

MGWMGW MGWMGW MGWMGW

MGWMGWMGWMGW

MGWMGWMGWMGW

TelephonyTelephonyServerServer

2 Tes26 MGW

packet core

4000 E1

2006-08-26 36

Network development - Phase 2Replacement of analogue local switches

MGWMGW

MGWMGW

TX

TX

TelephonyServer

TelephonyTelephonyServerServer

MGWMGW MGWMGWMGWMGW

MGWMGW MGWMGW MGWMGW

MGWMGWMGWMGW

MGWMGWMGWMGW

TX

TXTelephonyServer

TelephonyTelephonyServerServer

packet core

1 2 13

LS

New access nodes

TeSTeSTeS

MGWMGW MGWMGW MGWMGW

XXX

TeSTeSTeS

MGWMGW MGWMGW MGWMGW

X

Max. 125k

2006-08-26 37

ENGINE in MexicoStarting point

R2

PBX

RSS

RSS

PBXRSSRSS

CSS

R2

E10

Telmex PSTN

AXE

AXE AXE AXEImpossible!Growth

V5.2

AN

2006-08-26 38

Engine in MexicoStep 1 – introduce Engine softswitch

R2

PBX

RSS

RSS

PBXRSSRSS

CSS

R2

E10

GrowthV5.2

Telmex PSTN

AXE

AN

AXE AXE AXEMGW

TeS

2006-08-26 39

Engine in MexicoFuture steps – expansion and network consolidation

R2

PBX

RSS

RSS

PBXRSSRSS

CSS RSS

R2

E10

V5.2

Telmex PSTN

AXE

AN

X

AXE AXE AXEX X XMGW MGW

TeS

Growth

2006-08-26 40

Engine in MexicoFuture steps – grow with IP-MSAN

Telmex PSTN

AXE AXE AXEX X X

Growth with IP-NAM´s, reduced OPEX through node reduction

R2

PBX

NAM

RSS RSSRSS

CSS RSS

Growth V5.2

AXE

AN

X

MGW MGW

ETH

IP-MSAN

ETH

IP-MSANIPIP

TeS

2006-08-26 41

BT 21C aims

Revolutionise customer experience– Make it easier to buy and use services– Enable customers

Deliver innovative products more rapidly– Rapid service creation & implementation– With more people creating new services

Make it simpler to deliver and maintain service– Process, systems & network automation

Transform the cost base of the Company– Enabler of whole life cost reduction (Capex & Opex)

2006-08-26 42

What is the overall architecture?

A converged network based on IP and an MPLS core

An Intelligence layer that is mobile enabled based on 3GPP concepts

OSS systems controlling the complete network

An open applications layer

2006-08-26 43

21st Century Network structure vision

BeginFibre to thePCP

~30,000Multi-ServiceAccessDevices

~100MetroRouters

~10CoreRouters

End Customer

InternetPeering

DataCentre

InternationalNetworks

LogicalNodes

~80,000PCPsin the AccessNetwork

~100,000RemoteConcs,DLAMS& Data Muxes

~1000 +Voice Switchesand Data CrossConnects

~170 CoreSwitches(DMSU / NGS)

DataCentre

LogicalNodes

Today

Aggregation Service Edge CoreFuture

2006-08-26 44

Network areas & Selected partners

I-Node

Core

Transmission

Metro

Access

2006-08-26 45

Recommendation for BSNL Network

2006-08-26 46

“Rome was not built in a day”

2006-08-26 47

Recommendations for BSNL Network

Introducing NGN (TSS) Solution in International Gateway , Class 4 and Tandem Network.Migration of BSNL Local Access Nodes (RSS & V5.2 Nodes) to TSS based Network .Strengthening the IP access and IP Core Network.Increasing the Broadband Penetration.Introducing IMS Solution in Class A and Class B cities seeking Multimedia application.Evolving the mobile network under IMS umbrella providing feature transparency and true Fixed Mobile Convergence.

2005-06-08 48