UTStarcom Confidential 1

NGN Introduction

Soft Switching

Claudio Claudio FiorentiniFiorentiniCountry Manager Country Manager ItalyItaly

Francisco PrietoFrancisco PrietoNGN Solutions Manager NGN Solutions Manager EMEAEMEA

2UTStarcom Confidential

Agenda

• Evolution from TDM to NGN

• UTStarcom Architecture

• Tiscali IOT environment

• Tiscali UTStarcom Solution Topology

• NGN UTStarcom Solution Benefits

3UTStarcom Confidential

Traditional Telephone Networks

• Commonly referred to as PSTN.

– Public Switched Telephone Network.

• PSTN Network composed of:

– Access devices.

– Switching.

– Transport.

Access AccessSwitching SwitchingTransport

4UTStarcom Confidential

Generic Switch Architecture

Signaling

CallProcessing

SwitchingMatrixPr

oprie

tary

, Clo

sed

Envi

ronm

ent

5UTStarcom Confidential

What is a Soft Switch?

Voice switching platform built in a distributed architecture, based on open standard interfacesbetween its components and supported by actual TDM (PDH/SDH) and packet switching transport networks (IP).

• Performs the same functions as legacy PSTN Switches, but in a more flexible, economic and open architecture.

• Softswitches leverage the actual data network technologies for transporting voice media and signaling.– Voice – VoIP (RTP/RTCP).

– Signaling – MGCP, MEGACO, SIGTRAN, SIP, SNSP, etc.

6UTStarcom Confidential

Legacy - NGN Evolution

Signaling

Call Processing

Switching Matrix

LE LESS7 SS7

Voice Voice

E1’s E1’s

Signaling

Call ProcessingLE LEVoice Voice

SS7 SS7

E1’s E1’s

MG MGIP

MEGACOMEGACO

VoIP(RTP)

VoIP(RTP)

7UTStarcom Confidential

Legacy - NGN Evolution

IP

Signaling

Call ProcessingLE LE

SS7 SS7

Voice Voice

E1’s E1’s

MG MGIP

MEGACOMEGACO

VoIP(RTP)

VoIP(RTP)

SIGTRAN(M3UA)

8UTStarcom Confidential

Legacy Switch vs. Softswitch

Signaling

CallProcessing

Switching

Prop

rieta

ry, C

lose

d En

viro

nmen

t

Ope

n, S

tand

ard

Inte

rfac

es

Signaling

CallProcessing

Media Gateways

• Monolithic

• Proprietary

• Expensive

• Dependant

• Distributed

• Open Interfaces

• Scalable

• Vendor independent

• Convergence

9UTStarcom Confidential

Distributed Softswitch Model

Signaling Gateway

(SG)

Media Gateway Controller(MGC)

Media Gateways

(MG)

SIGTRANMGCP

MEGACOH.248

PacketInterface

PSTN

10UTStarcom Confidential

mSwitch Architecture

• Logically, mSwitch architecture consists of 4 layers:

IP Network

Access LayerAccess Layer(Gateways)(Gateways)

Control LayerControl Layer

Service/Application Layer

SNMS/mBOSS Layer

11UTStarcom Confidential

mSwitch R6 Network Architecture

12UTStarcom Confidential

TISCALI IOT Environment

SSP CagliariPC=0-124-0

Micro VAX

iUMG A

CS-P/CS-G/CPSPC=0-144-4

IMT CIC 1-31

Link TS16

LSET x

H.2

48St

andb

y

Act

ive

RTPStandby

Active

Stan

dby

SIG

TRA

NA

ctiv

e

Link TS16LSE

T x

SSP RomePC=0-27-7

Micro VAX

SIGTRAN

H.248

RTP

Link TS16LSE

T x

SSP MilanoPC=0-28-0

Micro VAXiUMG B

SIGTRANH.248RTP

IP

iUMG C

IMT CIC 33-63

IMT CIC 1-31 IMT CIC 33-63

IMT CIC 1-31IMT CIC 33-63

SCP

SRF

PC=0-64-6

PC=2-87-0

PC=x-yy-z

SCP

PC=0-63-7

RASDial up

E1 PRI

SRF

PC=1-460-1

13UTStarcom Confidential

TISCALI UTStarcom Solution Topology

IP transport network

Other Carriers TDM Switches

C-TGiUMG

N POPs in total

(> 400 DPCs, > 500 links)

CS-P

SS7 F links

SS7 F-links

IN SCP

INAP/E1

High Density POPs

New Low Density POPs

SG

(SEP)

SS7/M2UA

SS7/M3UA

H.248

CPS

(Milano CO)

IN SRF

ISUP/E1

CS-P

IN SCP

INAP/E1

SG

(SEP)

SS7/M3UA

CPS

(Roma CO)

IN SRF

ISUP/E1

H.248SS7/M2UA

Primaryconnections

Secondaryconnections

Other Carrier TDM Switches

iUMG

SS7 F links

{Milano CO and Roma CO are two geo. Redundant sites. Each can handle the entire network.}

Other Carriers TDM Switches

SS7 F links

iUMG

iAN8000

MSAN

iAN8000MSAN

UTSI IN SCP

UTSI IN SCP

Other Carriers TDM Switches

14UTStarcom Confidential

Benefits

• Increase the granularity and power processing distribution of the Network

– Low density interconnection

– Signaling, Media and IN capabilities distributed or concentrateddepending on carrier needs

• One Network– Reduction planning and engineering time– Reduction maintenance and operation costs

• Transport– Eliminate the need of internal E1 – Reduction bandwidth needed – Reduction maintenance and operation costs

• Organization– UTStarcom solution implemented in a common platform allow to focus

on services instead of networks

15UTStarcom Confidential

GrazieGrazie