PTCL Training & Development 1

NGN Architecture/Layer description and NGN Trends

NGN Architecture

Characteristics of Next Generation

Network:NGN is designed with an open network

framework.NGN adopts the hierarchical

architecture, which is divided into media access layer, transport layer, control layer and service/application layer.

NGN is based on standard protocols and packet switching network.

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NGN Hierarchical Architecture

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Edge Access

Core Switch

Network Control

Service Management

Service/Application Layer

Control Layer

Transport Layer

Media Access Layer

Access Layer

Interworks between Core Packet Transport layer and various existing communication networks.

Provides access of various communication terminals such as analog phone, SIP Phone, PC Phone visual terminal and intelligent terminals to the Core Packet Transport layer via various access gateways

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Core Transport LayerThe packet switching network composed of backbone transmission equipments such as IP router or broadband ATM switch as the bearer basis of the softswitch system.

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NGN Control Layer

The control Layer combines the

equipment that manages signaling and

call control progress.

The control handles the call setup and

controls the media gateways.

Major components at this layer are the

soft-switches.

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Application Layer

Layer with various applications and services such as client oriented integrated intelligent services and service customization.

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8

Service Management

Network Control

Core Switching

Edge Access IAD AMG

BroadBandAccess

UMG

PLMN/3G

SG TMG

PSTN

UMG

Packet Core Network

Soft Switch Soft Switch

iOSS PolicyServer

ApplicationServer

SCPLocationServer

RADIUSServer

MRS

iOSS: Intelligent network management system, SCP: Service Control Point , MRS: Media Resource Server, IAD: Integrate Access Device, AMG: Access Media Gateway, TMG: Trunk Media Gateway, UMG: Universal Media Gateway, RADIUS: Remote Authentication Dial-In-User Services

NGN Network Architecture

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Service Layer

Control Layer

Core Switch Layer

Access Layer

SoftX3000SoftX3000

3G AccessAMG5000IADBroadband

AccessPSTNPSTN UMG8900SG7000

PLMNPLMN

SoftX3000SoftX3000

IP Core Video GW

UMG8900

UMG8900

SIP/H.323 Phone

U-Path

ENIPENIPPolicy Policy ServerServer

MRS6100MRS6100ININ

OSSOSSiManageriManagerN2000N2000

LocationLocationServerServer

PSTN

switchSTP

Open Eye2G

Terminal3G

Terminal

Huawei U-SYS Network Architecture

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SG MSAGNAS H323GW IAD WAGAccess IP PBX

ZXSS10 IAD Series

Broadband Access

PSTN/ISDN WirelessSS7 Network

IP Router/ATM switch

Core Packet NetworkCore Packet NetworkCore Transport

Softswitch SoftswitchControl

ZXSS10 SS1 ZXSS10 SS1

Router ServerSCP AAA ServerApplication

ServerPolicy ServerService

ZXUP10 APP

AG

ZXSS10 A200

TG

ZXSS10 M100

ZXSS10 S100

NAS: Network Access ServerWAG: Wireless Access GatewayMSAG: Multi Service Access GatewayAG: Access Gateway

ZTE NGN Architecture

PSTN Access

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TGSG

PSTN

IP Core

Softswitch APP NMS

APP: APP Server: Application Server, TG: Trunk gatewaySG: Signaling Gateway, NMS: Network Management system

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Control Stream

Media Stream

IP Connection

TDM Bearer Network

TG

IP Bearer Network

SGTG

CityA PSTN CityB PSTN

LS

MS LSTP

TS

LS

TS

MSLSTPHSTP

SG

SIP-T

TDM Connection

Softswitch Control Device

Signaling gatewayFE/GE FE/GE

Signalling Gateway

FE/GE

TS: Tandem Switch, HSTP: High Speed Transfer Protocol, TG: Trunk Gateway, MS: Main Switching centreLS: Local Switch, SIP-T: Session Initiation Protocol for Telephone, FE/GE: Fast Ethernet Giga Ethernet

PSTN-IP Toll Traffic Splitting SolutionPSTN-IP Toll Traffic Splitting Solution

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Metro Optical Backhaul

Resource Manager

POTS

Multi Service Edge Route

LAN

APIAD

SoftphoneSoftphone

POTSFMC

MSAN

InternetSIP Phone

XDSL/LAN/POTS

Residential Enterprise Mobile Scenario

PSTN

Media GW

SS7/TDM

SS7/V5.2/TDM

NMSENIP

Softswitch

APP Server 3rd Party

Resource ManagerSignaling GW

Multi Service Edge Route

User Profile Center

IP Core Network

IPTV SipPhone

AP

Convergence

Intelligence

Broadband

ENIP: Enhanced Network Intelligent Platform, NMS: Network Management system, AP: Access PointMSAN: Multi Service Access Node, FMC: Fixed Mobile Convergence, MG: Media Gateway

Next Generation Network -Future

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Metro Optical Backhaul

POTS

LAN

APIAD

SoftphoneSoftphonePOTS

FMC

MSAN

InternetSIP Phone

XDSL/LAN/POTS

Enterprise

NMSENIP

Softswitch User Profile Center

IPTV SipPhone

AP

IP Core Network

Convergence

Centralized user profile center and application layer

for service convergence and fast service deployment

Shared converged IP network for voice, data and mobile

Unified multi-service access node for diversified services, decreasing the number of access node,

Residential

Convergence-oriented

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Metro Optical Backhaul

POTS

LAN

APIAD

SoftphoneSoftphone POTS FMC

MSAN

Internet

SIP Phone

XDSL/LAN/POTS

Softswitch User Profile Center

IPTV SipPhone

AP

Broadband

IP Core Network

Constructing high QoS network with large bandwidth

Introduce various broadband access methods to support broadband service deployment

Broadband

NMSENIP

Residential Enterprise

Broadband-oriented

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Metro Optical Backhaul

POTS

LAN

APIAD

SoftphoneSoftphone POTS

MSAN

Internet

SIP Phone

XDSL/LAN/POTS

Softswitch

User Profile Center

IPTV SipPhone

AP

Broadband

Intelligence

Centralized user profile center, session control and application layer

•Bring intelligence to whole network

•Support fast unified service deployment

NMSENIP APP Server 3rd Party

IP Core Network

Residential Enterprise

Intelligence-oriented