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Overview Of NGN & IP TAX.

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Presentation on theme: "Overview Of NGN & IP TAX."— Presentation transcript:

1 Overview Of NGN & IP TAX

2 AGENDA Present Generation Network Concept of NGN
NGN Architecture Concept of IPTAX For internal circulation of BSNLonly

Internet Gateways Wireless PSTN For internal circulation of BSNLonly

4 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

• 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

• Complexity in maintenance-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

7 Convergence

8 (Equipment Convergence)
ITU – 5 point Definition 1. Integration of Customer End Equipments/Access devices such as Telephones, TV and PC. (Equipment Convergence)

9 Convergence ? 2. Provision of various Communication services such as Text, Data, Image, Multimedia and Video services over the existing Infrastructure or over a single Transmission medium. (Medium Convergence)

10 Convergence ? 3. Capability of same Technology to offer various services. (Technology Convergence) 4. Different services under a converged licensing regime. 5. Fixed Mobile substitution/Convergence

11 CONCEPT OF NGN Target Standards Area
A NGN is a packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. Definition of NGN (Draft Rec. Y.2001) Target Standards Area Generalized Mobility Unrestricted Access Convergence btw. Fixed & Mobile Open Access I/F Separation Services with Transport Architecture and Open API QoS-enabled Transport Manageable Broadband Multiple-Broadband

12 Regional Telecom Training centre
Features of NGN Packet-based network QoS-enabled transport technologies Service-related functions are independent of transport- related technologies Offers unrestricted access by users (Open Interface) Supports generalized mobility - Convergence btw. Fixed & Mobile Ubiquitous provision of services to users. Regional Telecom Training centre

13 Call Server / Soft Switch Common IP MPLS Transport
CONCEPT OF NGN PSTN Switch NGN Components Call Server / Soft Switch Call Control Routers of Switching IP/MPLS Network Interfaces Gateways TDM Transport Network Common IP MPLS Transport For internal circulation of BSNLonly

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FEATURES OF NGN ·  Packet-based network · Very High-Speed Network from access to core · Network providing generalized mobility: · Unified and Universal Networks · Centralized Control Open Interfaces Common transport Regional Telecom Training centre



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ARCHITECTURE of NGN ·  Access Layer ·  Transport Layer · Control Layer (Soft-Switch) · Service Layer Regional Telecom Training centre

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Access Layer Access Layers is responsible for direct subscriber attachment function. NGN is capable of processing traffic originated from PSTN, GSM, CDMA, xDSL, WiMAX or any other access system. Access Layer consists of Gateways. Trunk Media Gateway, Line Media gateway and Signaling gateway. Regional Telecom Training centre

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Media Gateway The MG performs the task of packetizing voice and providing connections from switched circuits (TDM) to packetized circuits (IP) Regional Telecom Training centre

22 Functions of Media Gateway
• Voice encoding • Packetization of voice channels • CNF (Comfort Noise Generation) • VAD (Voice Activity Detection) • Echo Cancellation For internal circulation of BSNLonly

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Signaling gateway: The SG should be capable of providing conversions between SS7 addresses (point codes) and IP addresses. Regional Telecom Training centre

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Transport Layer Transport Layer forms the core of the Network. It basically consists of Routers Transport Layer of NGN is based on IP/ MPLS. Regional Telecom Training centre

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Control Layer It consists of call servers NGN may work on soft switch principle. MGC (Media Gateway Controller) Regional Telecom Training centre

26 Softswitch (Media gateway controller)
The call handling is performed at the MGC The MGC is responsible for controlling all the MGs within its zone. The MGC also determines the QoS required for any one connection at the MG. Regional Telecom Training centre

27 Functions of Soft Switch
• Based upon Open Architecture • Provide all existing services available in TDM network • Performs Media Gateway Control Function For internal circulation of BSNLonly

28 Functions of soft switch
Performs Call control, signaling and Interworking Traffic measurement and recording functions Provides Addressing, Analysis, routing and charging facilities Interacts with Application Server to supply services not hosted on Softswitch For internal circulation of BSNLonly

29 Service or Application Layer
Enhanced services to the subscribers will be provided with the help of application servers. It may include prepaid servers, announcement servers, Service servers Regional Telecom Training centre

30 Functions of Announcement Server
• Announcement server performs the function of giving the announcements as per requirements in the network For internal circulation of BSNLonly

31 Network Management System
The Network Management System (NMS) manages all network elements in a Soft switch network. It typically uses SNMP to communicate with the network elements. Regional Telecom Training centre

32 Integrated Access Devices
The Integrated Access Device (IAD) provides voice or voice and data services for individuals, and SOHO subscribers by connecting the subscribers´ terminal equipment such as PC, telephone and fax machine into the packet network. Regional Telecom Training centre

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NGN Protocols Regional Telecom Training centre

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NGN Protocols Media Gateway Controller Application Server Media Gateway Signaling PSTN/ End users SIP, Parlay, Jain Sigtran H.248/Megaco SIP-T RTP Application specific Regional Telecom Training centre

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NGN Architecture using Soft switch Regional Telecom Training centre

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NGN SERVICES Voice Telephony Data (Connectivity) Services Multimedia Services Virtual Private Networks (VPNs Public Network Computing (PNC) Unified Messaging E-Commerce Regional Telecom Training centre

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E-Commerce Call Center Services Interactive gaming Home Manager Push to talk over NGN . Point-to-Point interactive multimedia services Regional Telecom Training centre

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Content delivery services Broadcast/Multicast Services Hosted and transit services for enterprises (IP Centrex, etc.) Sensor Network services Regional Telecom Training centre

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Review Questions… 1. The call control intelligence of NGN is known as 2. The performs the task of packetizing voice and providing connections from switched circuits (TDM) to IP circuits 3. The NGN Access Layer consists of 4. Transport Layer of NGN is basically consists of 5. Between Media Gateways (MGs) and Media Gateway Controllers (MGCs) the protocol used is ----- 6. The protocol is used between two MGs for packetized bearer traffic. Regional Telecom Training centre

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NGN Implementation in BSNL (IP TAX) Regional Telecom Training centre

41 NGN Implementation in BSNL
Migration Strategies: Two types of migration scenarios could be foreseen based on A replacement strategy An overlay strategy Regional Telecom Training centre,Trivandrum

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Replacement strategy It consists of replacing traditional PSTN equipment by next generation equipment. Regional Telecom Training centre,Trivandrum

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Overlay Strategy With an overlay strategy, the NGN network will integrate current circuit-switched and packet-switched technologies Regional Telecom Training centre,Trivandrum

44 Migration Strategy of BSNL
Class 4 NGN Introduce IP Tax in Transit network at Level-1 TAX locations (IP TAX Project) Regional Telecom Training centre,Trivandrum

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Phase I Migration Replacing the transit network with soft switch architecture. Local Exchanges -Connected to Trunk Media Gateways for transportation of Media To Signaling Gateway for signaling transport. Regional Telecom Training centre

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Phase I Migration Regional Telecom Training centre

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Phase II Migration Regional Telecom Training centre

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Phase III IMS End to end IP traffic . Regional Telecom Training centre

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Class 5 NGN Extend IP network to Level-2 TAXs and large scale implementation in Access Network Develop MPLS core at Circle and LDCA Level. Regional Telecom Training centre,Trivandrum

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The implantation plan Setting up Two Soft Switches at New Delhi and Chennai and Signalling Gateways at New Delhi, Chennai, Kolkotta and Bangalore Providing Trunk Media Gateways (TMGs) at 21 Level-1 locations Regional Telecom Training centre,Trivandrum

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The implantation plan Providing one Announcement Servers in each IP domain i.e. one at New Delhi and one at Chennai. Billing interface to Centralized Billing Server at Chennai. NMS at Chennai with FCAPS (Fault,Configuration,Accounting,Performance,Security) capabilities. Regional Telecom Training centre,Trivandrum

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The implantation plan No separate NTP server is being used in IP TAX, the existing NTP server of our data network will be used for synchronization Regional Telecom Training centre,Trivandrum

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THANKS Regional Telecom Training centre

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