Materi kuliah 6 sp 2005 penjastel
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MATERI KULIAH 6 SP 2005 PENJASTEL. Next Generation Networks ( NGN ). Adapted from PT. INTI internal documents for teaching purposes. Realization of Convergence of the telecommunication networks Using Distributed Control Architecture instead of Traditional common control architecture.

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MATERI KULIAH 6 SP 2005 PENJASTEL

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Materi kuliah 6 sp 2005 penjastel

MATERI KULIAH 6 SP 2005 PENJASTEL


Next generation networks ngn

Next Generation Networks( NGN )

Adapted from PT. INTI internal documents for teaching purposes


Next g networks definitions

Realization of Convergenceof the telecommunication networks

Using Distributed Control Architecture instead of Traditional common control architecture

Next-G networks: Definitions


Traditional networks

Traditional Networks: Separated Networks

Distinct services: voice, mobile, data

Different equipment for different services

Different regulations

SS7 Network

CL5 Switch

IMT

IMT

PSTN

PRI

CL5 Switch

CL4 Switch

C4 Switch

Corp PBX

MSC

PSTN

CL5 Switch

ISP RAS

ISP RAS

CL5 Switch

Internet

ISP

ISP

Traditional Networks

Separated Networks


Traditional networks1

PSTN uses a circuit-switched network to carry voice

Proven, reliable, QoS, feature rich, intelligence is in network

PSPDN uses a packet-switched network to carry data

Open interfaces, flexible bandwidth, lower costs, intelligence is in CPE

Traditional Networks

Separated Networks

Access Switch

DLC

Central Office Switch

Point of Presence

PSTN

PSPDN


Traditional networks2

This situation is expensive and inefficient:

Many solutions are proprietary

Many resources are duplicated and cannot be shared

Separate management system for each network

The future belongs to data networks but the money is in voice! The Data Network expands, but voice is still the main revenue-generator

Traditional Networks

Problems


Data superior traffic volume

Data: Superior “Traffic Volume”

Total Average Bit rate (Gbit/s)

Source: Siemens


Voice key revenue generator

Voice: Key “Revenue Generator”

Operator Revenues (billion DM )

29 %

25 %

20 %

Source: Siemens


Convergence network

The next-generation network seamlessly blends the public switched telephone network (PSTN) and the public switched packet data network (PSPDN), creating a single multi-service network. This is called convergence

End Office Switch

End Office Switch

Corporate Network

IMT

Internet

IMT

PRI

PRI

ISP RAS

ATM

PSTN

Convergence Switch

Convergence Switch

Corp PBX

ATM Core

IAD

Convergence Network

Definition


Convergence

Switch

Switch

Switch

Convergence

Missing Link

Multimedia Service Platform

Feature Rich

Flexible bandwidth

QoS

OpenI I/F

Reliable

Lower costs

Proven

Intelligence is in network

Data

Networks

Voice

Networks

Intelligence is in CPE

  • To fill the missing link between voice & data networks, you need wirespeed, cost efficient mediation devices at the junction points of networks, controlled by centralized intelligence of a powerful call and feature server

...


Distributed control architecture

IP

TDM

ATM

Intelligence

Distributed Control Architecture

  • Intelligence

  • Old Architecture:

    • Larger

    • Centralized (common)

    • Expensive

    • Proprietary

  • New Architecture:

    • Smaller

    • Distributed

    • Cheaper

    • Open


Distributed control architecture1

IP

TDM

ATM

Distributed Control Architecture

  • Common Control Architecture

  • Proprietary H/W and S/W

  • Wait for generic S/W release to launch application/services

  • Long application development time

  • Open Distributed Architecture

  • More applications, more revenues

  • Service creation at network edge, close to the customer

  • Lower cost, faster application development


Itu layer model of next g network

Packet Network IP or IP over ATM

ITU Layer Model of Next-G Network

App Server

Softswitch

OSS

Central Service Server

APIs for 3rd party app development

Service & Control Layer

Call Server

Control Signal to SS7 GW

Control Signal to Internet GW

Core Network GW (SS7 Network) Gateway

Interconnect GW to the Internet

Transport & Connectivity Layer

Access GW

Mobile

CATV

Fixed

Access Layer

Phone

WAP

CATV AN

PSTN

Voice-data Int access


Materi kuliah 6 sp 2005 penjastel

Circuit-switch vs. Softswitch

The Softswitch will play a strategic role in the next-generation public network infrastructure for voice, video and data communications

Circuit-Switched

Soft-Switched

Services, Applications & Features (Management, Provisioning and Back Office)

PROPRIETARY

Services & Applications

Open Protocols APIs

Call Control & Switching

Softswitch Call Control

Open Protocols APIs

TransportHardware

Transport Hardware

Softswitch Objectives

  • Flexible distribution of switching functionality

  • Interoperability among functional elements

  • Carrier selection of best-in-class components

  • Rapid introduction of innovative new services


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