Softswitch for the next generation network group 2

Introduction and Background Softswitch Networking Architecture Softswitch and next Generation Network Research Progress of Softswitch Standardization... Introduction and backgroundSo

Lecturer : Dr Le Anh Ngoc

Presenter: Nguyen Thi Linh

Nguyen Tu Thoan

Softswitch for the next generation network (NGN)

Introduction and Background

Softswitch Networking Architecture

Softswitch and next Generation Network

Research Progress of Softswitch

Standardization

Introduction and background

Softswitch for the next generation

 All that the basic service of traditional telecommunication network is to provide voice service

 In this circuit switch , network, hardware and software are not independent.

 The designers of IP network think that transmit network doesn’t need to provide end-to-end reliable transmission services

 Softswitch is a new solution of amalgamation packet-based switch network with Public Switched Telephone Network

 Softswitch combines the reliability of PSTN and the flexibility of IP appropriately.

Introduction (cont)

Softswitch enables the compatibility

between voice service of next generation and the switch function of the traditional PSTN transparently

What is the softswitch?

Softswitch for the next generation

network (NGN)

5

Softswitch is the next generation voice and multimedia switch based on the IP technologies

Softswitch (software switch) is an equipment and system providing the separating of call control and media procession by software of program

network (ISC)

Call Agent or Media Gateway Controller is also called Softswitch

What is the softswitch? (cont)

A softswitch is a device that provides, at a

customer database information

 It has the ability to transfer control of the call to another network element

 It provides interfaces to and supports

Example of softswich

Softswitch for the next generation

Example of softswitch

The functions of softswitch

Softswitch for the next generation

Circuit switch vs softswich

Softswich is design to replace the Class 5 and Class 4 switches based on the circuit switching technologies

Softswitch is a software based solution

implemented on general purpose computers/servers,

The traditional Class 5 and Class 4 switches are rely on dedicated facilities for inter-

connection and are designed primarily for voice communications

Circuit-switch vs Softswitch

• Software, hardware and

applications solutions typically

come packaged in a single

(proprietary) box.

• Non-standard solutions are

expensive to implement and leave

little room for innovation

Circuit-Switched

Transport Hardware

Call Control &

Switching

Services &

Applications

P R O P R I E T A R Y

• Solutions are open based products, and can come from multiple vendors.

standards-• Customers are free to choose best-in-class products to build their network Open standards enable innovation and in the long run can reduce costs

Soft-Switched

Transport Hardware Softswitch Call Control

Services, Applications & Features (Management, Provisioning and

Back Office) Open Protocols APIs

Open Protocols APIs

Softswitch for the next generation

The advantages of the Softswitch

vs the traditional circuit switch

New services and revenue stream for

Softswitch Networking

Architecture

Softswitch for the next generation

Softswitch includes three aspects:

 It is a network solution instead of node point solution like centralized switchboard.

 It is a solution combining the distribution and centralization.

 It is a soft solution and the important method

is the interface protocols between control logic and network units in the softswitch

Softswitch Networking Architecture (cont)

Softswitch separates the service control,

transmit and medium access and each entity connects and communicates by standard protocols

All the network is divided into four layers:

 Medium access layer

 Transport service layer

 Control layer

 Application layer.

Softswitch is in the control layer

Softswitch Networking Architecture (cont)

Softswitch for the next generation

Softswitch Networking Architecture

(cont)

communication

 heterogeneous network and core transmit network

 among the heterogeneous network

transmission the control information between the service

date & control layer and medium access

 Provides planes for the execution, management, created service

Softswitch Networking Architecture

Softswitch technology

Softswitch components

Softswitch for the next generation

The Softswitch at Work

Softswitch

Cellular Station

Digital Cross Connect

SS7 Gateway

SS7

Application Servers

Q.931/Q.2931

H.323 SIP

MGCP MEGACO

SIP MGCP

The softswitch will play a strategic role in the next- generation public

network infrastructure for voice, video and data

communications

Softswitch

One of the main components of NGN

Broadly speaking, NGN means all the new network technology and narrowly speaking, NGN means softswitch

Softswitch and NGN (cont)

Jiang Lintao thought that the core of NGN

The core of future VoIP will be softswitch

Hardly define the softswitch as the core of NGN

Softswitch and NGN – Lucent Softswitch

Softswitch for the next generation

More and more governments and

organizations have taken part in NGN such

as IETF, 3GPP, UMTS, CANET3

Ramnath A and Lakshmi-Ratan in Bell labs provided Next-generation access services controlled by a Lucent Softswitch (Project Saras)

 Lucent Softswitch control of DSL and cable access

 Lucent Softswitch system architecture Policy server architecture

Softswitch and NGN – Lucent

Softswitch

The purpose of Project Saras was to

develop a software system that solves several major problems that providers of telephone services

The Octavia platform integrates the

FRIENDS platform and network equipment that provides the Parlay API

Softswitch and NGN

Softswitch for the next generation

Research Progress of Softswitch

 it can realize the original purpose of softswitch

 many telecommunication equipment

manufactories are doing researches on new switch transition planes

Softswitch for the next generation

Softswtich has much potentials, but it is still in developing lever

NGN based on softswitch is an intact network solution

Some significant factors should not be ignored such as QoS(quality of service), gateway, safety, the methods of operation provision and compatibility

Q & A