E2-E3

CFA
NGN ARCHITECTURE & IPTAX

For internal circulation of BSNLonly

 AGENDA

Present Generation Network

Concept of NGN
NGN Architecture
Concept of IPTAX

For internal circulation of BSNLonly

PRESENT GENERATION NETWORK

Internet

Gateways

Wireless
PSTN

For internal circulation of BSNLonly

 COMPARISON
NETWORK ACCESS CORE DESIGNED SWITCHING
FOR PRINCIPLE

PSTN Wires / LE TAX Voice Circuit

PLMN Air / BTS/BSC MSC Voice Circuit

PSPDN From Router Data Packet

Different N/W
/Router

For internal circulation of BSNLonly

PRESENT GENERATION NETWORK

• Fixed line usage is reducing dramatically

• Mobile use is increasing steadily

• Broadband Internet deployment shows a

rapid growth trend.

• As per a study IP traffic increases 10 fold

every year while voice traffic is relatively
flat.
For internal circulation of BSNLonly
 PRESENT GENERATION NETWORK
• Duplicating Capital Expenditure

• Complexity in maintenance I.e increased operational

expenditure

• Difficulty in deployment of new services.

• Proprietary protocols between the network entities

resulting into expensive add-ons.

• Demand of innovative services from customers

For internal circulation of BSNLonly
 CONCEPT OF NGN

A NGN is a packet-based network able to provide telecommunication

Definition services and able to make use of multiple broadband,
of NGN QoS-enabled transport technologies and in which service-related
(Draft functions are independent from underlying transport-related technologies.
Rec. It offers unrestricted access by users to different service providers.
Y.2001) It supports generalized mobility which will allow consistent and
ubiquitous provision of services to users.

Target Standards Area

Generalized Mobility Convergence btw. Fixed & Mobile

Unrestricted Access Open Access I/F

Separation Services with Transport Architecture and Open API

QoS-enabled Transport
Manageable Broadband
Multiple-Broadband
 CONCEPT OF NGN
PSTN Switch NGN Components

Call Server /
Call Control Soft Switch

Routers of
Switching IP/MPLS
Network

Interfaces
Gateways

TDM
Transport
Network
Common IP MPLS Transport

For internal circulation of BSNLonly

 NGN ARCHITECTURE
Control
Application Application
Bearer

Layer Services
Internet
Control
Softswitch IP Service
Layer Control Switching

Transport
Layer
Media
PSTN Gateways

Multiservice
Broadband Packet Switching
Access X
DSLAM X X National Optical
ACCESS X X X X
GbE Metro Optical
Access NETWORK X
X
Frame/ X
Layer ATM
CPE
CORE NETWORKS
Wireless

For internal circulation of BSNLonly

 CONCEPT OF IPTAX
Transit
Local Local
Exchange Call Control Exchange

Switching Call Control

Call Control

Bearer
Bearer
Interfaces
Switching Switching

STP

Interfaces Interfaces
Call Control

Switching

Signaling Signaling
Interfaces

For internal circulation of BSNLonly

 CONCEPT OF IPTAX
Transit
Local Local
Exchange Soft switch Exchange

Call Control Call Control

Gateway Gateway
Bearer
Switching Switching
Bearer
Common IP MPLS Transport
Interfaces Interfaces

Signaling Gateway Gateway Signaling

For internal circulation of BSNLonly

For internal circulation of BSNLonly