pstn migration to ngn

PSTN Migration to NGN

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CONTENT SOLUTION NGN CONCLUSION

Content

The Path to NGN Solution

MileGate/UMUX in NGN

Conclusion

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THE PATH TOWARDS NGN SOLUTION

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The Path towards NGN Solution

PSTN

NGN

Step 1

Why migrate

Step 2

What requirements

Step 1

Why migrate?

Step 3

Which architecture?

Step 2

What requirements?

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Step 1 – Why migrate to NGN?

Telecom service provider PSTN infrastructure renewal Network extension: Greenfield and rural areas Improve OPEX, reduce CAPEX Provide new services

Virtual voice service provider Reduce costs: Bypass other operators’ network Provide new services (IP Centrex)

ISP/broadband provider Extend business with voice services to broadband

customers Extend addressable market to narrowband

customers

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Legacy and NGN Services of Fixed Line Operators

Relevant for ResidentialBusiness

Legacy Services NGN Services

POTSISDN BRAISDN PRA

VoIPVoice

Dial-InDSL (ATM)

DSL (IP/Ethernet)100BaseT1 GbE

Internet Access

PDH/SDH (LL)X.21 …FRATM

DSL (IP/Ethernet)100BaseT1 GbE

Data

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What will be the impact of legacy voice in the operators‘ business?

Fixed retail telecom services (World)

0

100.000

200.000

300.000

400.000

500.000

600.000

700.000

800.000

2005 2010

US

$ (M

ill.)

Broadband, Internet & NGN Data

NGN Voice

Legacy Data

Legacy Voice

Legacy services will not be neglectable for many years

Legacy voice revenues will decline sharply, but it will still deliver a major part of the revenues.

Legacy data will decline smoothly

Source: Gartner 2006 & own calculations

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PSTN Migration to NGN – Architectural View

MONOLITHIC SWITCH ARCHITECTURE

NGN ARCHITECTUREOpen, standardised Interfaces

TDM Class 5 Switch

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NGN vs. PSTN (Telephony)

TRADITIONAL ARCHITECTURE

NGN ARCHITECTURE

SS7

Class 5Switch

PSTNTrunkCards

SignallingLinks

LineCards

Switch FabricController

NT

TDM Switch

ISDN, Q.931

POTS, CAS t/r

SS7

Class 5Switch

PSTNTrunk

Gateway

SignallingGateway

MediaGateway

Packet Network

Media GatewayController

NTISDN, Q.931

POTS, CAS t/r

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Step 2 – Which Requirements?

IncreaseRevenues

&Profitability

Reduce OPEX

Migrate legacy services to NGN platforms Reduce no. of operational platforms Enhance OAM&P processes

Maintainlegacy services

revenues

Leverage the revenues of POTS ISDN Leased Lines …

Increasenew services

revenue

IPTV (Triple Play) VPN LAN-LAN …

Implement "new" residential and business services

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Step 2 – Reference Case

The transformation has a radical strategy … Broadband everywhere… Replacing the PSTN PSTN transformation trial A world first for a telecom company

Speed to market

Costtransformation

Customerexperience and empowerment

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NGN Voice Service Provisioning

TDMGW

Trunk GW

SignallingGW

POTSISDN

Soft Switch

SS7

PSTN

Packet Network

(Core/Metro IP, MPLS)

GW = Gateway

POTSISDN

TDM

1 = Centralised Gateway

1

2 = Access Gateway

AccessGW

H.248/SIP

NT-1 POTSISDN

2

4 = Soft Phones

DSL/cable

SIP

4

3 = Residential Gateway

DSL/cableResidential

GW

SIP

POTSISDN

3

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Step 3 – Which Architecture?

PSTN

SS7

MGC

IP-Phone/Multi-Media PC

TG

PacketNetwork

SIP or H.323

H.248or SIP

MGC

BICC orSIP-T

SIP or H.323

SIGTRAN

H.248or SIP

CO

SG

TG/SG

GatekeeperProxy-Server

NT-1

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Step 3 – Which Architecture?

CLASS 4 NGN

COSwitch

TrunkGateway

Signalling

Gateway

Packet Network


SS7

PSTN

SS7

PSTNCO

SwitchTrunk

Gateway

SignallingGateway

CLASS 5 NGN

Residentialgateway

Packet Network


NT1

MediaGateway

SignallingGateway

MediaGateway

SignallingGateway

POTS/CAS t/r

POTS/CAS t/r

IAD

ISDN/Q.931

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Access Gateway Architecture – Distributed vs. centralised

MGC

ApplicationServer

MGC

ApplicationServer

Distributed Access Gateway

Centralised AccessGateway

∎ New services ∎ Broadband services∎ Triple Play

Continuity of service PSTN, SS7 interworking Costs

Continuity of service PSTN, SS7 interworking

Costs ?

Packet swichednetwork

Packet swichednetwork

AGMetro

network

AG

AG

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Advantages – Distributed Access Gateway

Continuity of service Keep the phone, no re-cabling

Keep the service

No impact on end user

PSTN, SS7 interworking Signalling gateways

SIGTRA

Costs Less network element

Low incremental investment

Improve network availability

More efficient transmission capacity Local call routing Compression

New revenue Broadband services

Triple Play

1. Local Call Routing

2. Compression

MGC

ApplicationServer

Distributed Access Gateway

Packet swichednetwork AG

AG

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KEYMILE’s Ways to NGN Voice

KEYMILE provides two platforms to support the migration of legacy voice

Next Generation Digital Loop Carrier (NG DLC)UMUX

Broadband Loop Carrier (BLC)MileGate

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MileGate as BLC

Core Network

METRONode

ACCESS

METRO/REGIONALNETWORK

Telephony

POTS

SUBSCRIBER

NTBA

GigabitEthernet

Voice

SUPM3: 32 POTS PortsSUIQ1: 16 ISDN PortsIPSx2: H.248 or SIP

608 subscribers

H.248 orSIP

SoftSwitch

COGE1

IPSx2

SUIQ1

SUPM3

ISDN

Core Network

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UMUX in Telephony NGN

KEYMILE offers an Access Gateway (IP Subscriber Media Gateway – IPSMG)

IP over Ethernet

H.248/MEGACOSIGTRAN


Trunk Gateway

Circuit SwitchedNetwork (PSTN)

Packet SwitchedNetwork (IP)

POTS t/r

ISDN BA

ISDN PRA

MelCASE1

IVR

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V5.2 to MEGACO Migration in UMUX

PSTN/ISDN

POTS/ISDN in NGN

Voice Access

Voice TelephonyAccess in NGN

Packet SwitchedNetwork (IP)


PSTN

PDH/SDHNetwork

LocalExchangeV5.x

UNEM Release R5C

UNEM Release R7

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Conclusion

PSTN migration to NGN NGN will happen, technology is maturing Benefits are cost savings, new services, speed

to market Distributed access gateway provides more

flexibility and better cost Plan, try and deploy!

Service Continuity

NewRevenue

Costs

NGN

MileGate & UMUX

Legacy voice services will continue to represent an important revenue stream

Reduction on operational expenses require the migration of voice services to NGNs

Distributed access gateway provides more flexibility and better cost

KEYMILE supports VoIP Media gateways based on H.248/MEGACO and SIP

KEYMILE provides VoIP-Media Gateway solutions on its both platforms

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pstn migration to ngn

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