area presentation final

8/8/2019 Area Presentation Final

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MTNL: An Overview

y Mahanagar Telephone Nigam Limited is an Indian Government-owned Telephone

service provider in the cities of Mumbai, Thane, New Delhi, and Navi Mumbai.The

company was a monopoly until 2000, when the telecom sector was thrown open to

other service providers.

y MTNL provides fixed line telephones, cellular connection of both GSM Dolphin

(Postpaid) and Trump (prepaid).WLL (CDMA) Garuda-FW, Garuda-Mobile and

internet services through dialup and DSL Broadband on Fixed Line phone.

y MTNL has also started Games on demand, Video on demand, IPTV and VOIP

services in India through its Broadband Internet service called Triband.

y Recently addition in services provided by MTNL is its Wireless Broadband ServiceWiFine and 3G Mobile service 3G JADOO.


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VoIP(Voice over Internet Protocol)

y MTNL Landline connection will now provide 4 in 1 Facilities

y A single Telephone line shall enable the customer to use the Normal telephone,

Broadband Internet, TV and VoIP phone simultaneously


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VoIP Service will be available to Broadband Customers of MTNLVoIP Service will be available to Broadband Customers of MTNL

VoIP uses Session Initiation Protocol(SIP) for signaling and RealVoIP uses Session Initiation Protocol(SIP) for signaling and Real--time Transporttime Transport

Protocol (RTP) for transporting voice packets.Protocol (RTP) for transporting voice packets.

Like HTTP is for Web, SMTP is for email , SIP is for Voice over IP.

G.729 Audio Codec will be used for Voice Calls. Bandwidth required is

approximately 35Kbps per call(upload & download both)

Service is being launched on Prepaid basis with monthly rental

There is no Interconnection between VoIP Switch and any MTNL PSTN Switch.

Bandwidth (MBs) used in VoIP Service will not be charged.

BASIC INFORMATION


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PRESENT SETUP

System Capacity is for 50,000 VoIP subscribers

Maximum Concurrent Call Handling Capacity is 5,000

Architecture is server based and capacity can be augmented by adding servers

SYSTEM CAPACITY


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Facilities on VoIP

Three Party Conference Call

Call Forwarding

G-3 Fax

PCO


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TYPES OF CALLS FROM VoIPPHONE

1. SIP to SIP LOCAL,NATIONAL,INTERNATIONAL

2. SIP to PSTN ONLY INTERNATIONAL

3. SIP to MOBILE ONLY INTERNATIONAL


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VoIP CALL FLOW

Overseas

Mobile

Network

Overseas

Landline

Network

MTNL DELHI

BROADBAND

NETWORK

Overseas

Broadband

Network

ATAATA

ADSL CPEADSL CPE

ADSL CPEATA

VoIP Soft Switch International

Gateway

Internet

SIP User A SIP User B SIP User D

Overseas Landline

User F

Overseas Mobile

User E

2. SIP to Mobile (International) -- User A to User E 3. SIP to PSTN (International) -- User A to User F

1. SIP to SIP (Local ) -- User A to User B

SIP to SIP (National) -- User A to User C

SIP to SIP (International) -- User A to User D

MTNL BOMBAY

BROADBAND

NETWORK

ADSL CPE

ATA

SIP User C


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INTERNET PROTOCOL DIVISION


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What is IPTV

y IPTV is television content that, instead of being delivered through traditional

broadcast and cable formats, is received by the viewer through the technologies used

for computer networks.

y

It is typically supplied by a service provider using a closed network infrastructure.y It may be used to deliver television content over corporate LANs.


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Architecture of IPTV

y Depending on the network architecture of the Service Provider, there are two main

types of Video Server architectures that can be considered for IPTV

deployment,Centralized, and Distributed.

y

The Centralized Architecture model is a relatively simple and easy to managesolution. It is generally good for a network that provides relatively small VOD

service deployment, has adequate core and edge bandwidth and has an efficient

Content Delivery Network(CDN).

y A Distributed Architecture is just as scalable as the Centralized model, however it

has bandwidth usage advantages and inherent system management features that are

essential for managing a larger server network.


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MTNL IPTV Service on Broadband

Service Features:-

y In this service the TV channels are encoded in IP format and delivered to TV using a

Set Top Box. The IP TV Service also includes Video on Demand Services which is

similar to watching Video CD's / DVD's using a VCD / DVD player.

y 1. Normal Telephone Service

y 2. Broadband Internet service

y 3. IPTV service


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Components:-

The main components in delivering this service are

1. TV and Content Head End - Where the TV channels are received and Also other

content (Video's) are stored at Head End. MTNL has signed agreement for this withM/s IOL Broadband. encoded.

2. Delivery network- Which is MTNL's Broadband network and MTNL's

telephone line ( Landline ).

3. Set Top Box (STB) - The Set Top Box is required at the customer location for

the IP signal back to TV signal. The STB shall be connected between

MTNL Broadband Modem and customer's TV. The STB shall be provided by

M/s IOL.

4. MTNL Landline telephone with Broadband connectivity is required for this


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Sample IPTV System:-


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IP Video System:-


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What is ADSL?

y ADSL stands for Asymmetrical Digital Subscriber Line

y A transmission technique used on the line from your modem to your service

provider.

y Defines how data can be transmitted from a users premises and the local telephone

exchange over the normal telephone wiring(also called local loop by telephone

companies).


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ADSL components:

y ADSL Modem

ADSL modem is connected to the telephone wiring that connects the user to the

local exchange equipment.

It uses a combination of several advanced signal processing technique in order

to achieve required throughput speeds on ordinary telephone wiring.


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y Local loopy It is the term applied to the ordinary telephone wires that go from a

users premises to the telephone company.


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Working of ADSLy ADSL exploits the unused analog bandwidth that is potentially available in the wires

that runs from users premises to local exchange.

y

The wiring was designed to carry that portion of the frequency spectrum that isoccupied by normal speech.

y However, wires can carry frequencies above this rather limited spectrum. This is the

portion ADSL uses.


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y

The frequencies carried by local loop and its transmission capacity dependson:

Type and thickness of wires

Number and types of joins in the wire

Proximity of the wire to other wires carrying ADSL, ISDN and other non

voice signals.

Proximity of wires to radio transmitters.


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ow o vo ce an a a co-ex s n

ADSL

y Splitters that separate the high frequencies used by ADSL from the lowfrequencies used by voice are situated at each end of the loop.

y At the users end, low frequencies go to the phone and high frequenciesgo to ADSL modem.

y At local exchange, low frequencies go to normal telephone networkwhile high frequencies go to the service provider.


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I -CC


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INT-CC

What is INT-CC ?

It stands forCustomerCare service centre.

Under the Contact Technologies Excellence Centre (CTEC) customer

service was launched in 2002.

260 agents are appointed in this department.

300 port IVR System was also deployed for customer self service.

Key objective was to increase overall customer satisfaction.


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Need for INT-CC:

y Large database of 5 million subscribers.

y Approx. 250,000 calls per day to be handled.

y To provide customer satisfaction.

y Intelligent CustomerCall Routing using CTI (Computer Telephony

Integration)

y Managed Support Service.


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Challenges Faced by INT-CC

y Distributed Call Centre operations.

y 7 different Call Centre locations in Delhi.

y Centralized Monitoring and Control.

y Web based services.

y 260 agent seats.


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Solution Proposed for INT-CC

y Tadiran Coral 5000 switch via a CTI link is used to automate incoming

calls handling process

y Subscriber may choose to use self-service offered by IVR System or to

speak with a live Customer Service Agent.

y 4 IVR Servers, 4 CTI Servers in cluster mode with database server is used.

y Integration of incoming calls with MTNLs billing database.

y Centralized control of call centre from one place.

y IVR System provides personalized service based on CLI and DNIS

provided by the network.


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Features of INT-CC

y Synchronized voice and data transfer.

y Real time monitoring and control.

y Custom reports on system and agent statistics.

y CRM integrated with agent application for better response management.

y Quicker response to customer queries and requests.

y Better customer management.


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Broadband Network Operating Centre (NOC)

y Support interactive services like INTERNET.

yMinimum download speed of 256kbps is provided.

y ADSL2+ internet service is provided by NOC to its subscribers.

y ADSL2+ enhances web browsing speed and consumes less power.

y Simultaneous availability of phone and internet is provided on single

telephone line.


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Features of Broadband Service

y High speed data download starting from 256kbps to 8Mbps.

y Always ON Internet.

yNo call charges for Internet Usage.

y 24 Hours helpline.

y Telephone will continue to work even in case of power failure at customer

end.

y Customer can create his own LAN connection by sharing of Broadband

Connection.


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Internet Service Provider (ISP)

Company that offers its customers access to internet.

y It connects its customers using a data transmission technology appropriate

for delivering Internet Protocol datagrams, such as dial-up, DSL, cable

modem, wireless or dedicated high speed interconnects.

y Provides Internet e-mail accounts to users which allow them to

communicate with each other by sending and receiving electronic

messages.


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Internet Gatewayy It is a network node equipped for interfacing with another network that

uses different protocols.

y A gateway contains devices that provide system interoperability.

y Interconnects network with different network protocol technologies by

providing protocol conversions.

y Also known as protocol converters.

y Can operate at any layer of OSI model.

y Converts one protocol stack to another.


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INTERNETy It is a network connecting networks.

y If one network malfunctions, the other can function normally without it.

y It uses TCP/IPProtocol to serve billions of users worldwide.

yMost traditional communication media, such as telephone services, are reshapedor redefined using the technologies of internet (VoIP, IPTV).

y It has no centralized governance in either technological implementation or

policies for access and usage.

y It is a global data communications system.

y It is hardware and software infrastructure that provides interconnectivity between

computers.


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Client and Server

y In an internet, application programs are entities that communicate with

each other, not the computer or users.

y Application program at Client end, running on local machine, requests a

service from another application program running at server end.

y It is a many-to-one relationship.

y Server needs to operate at all the time, contrast with client which can

operate only then when needed.


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IPAddressing

y Each IP address has specific components and follows a basic format.

y Can be subdivided to create addresses for subnetworks.

y Each host has unique 32-bit logical address which is subdivided in two

parts i.e. the network number and the host number.

y 32-bit IP address is further grouped into 4 groups of 8 bits each which is

knows as IPAddress Format.


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Network Devices

yGateway:

y Works on all seven layers of OSI and is used to convert

protocols among communication networks.

yNetwork Switch:

y Connects network segments.y Processes and routes data at Data Link Layer of OSI model.

yRepeater:

y Electronic device that receives an input signal and transmits it at

higher level/power.

yUsed to increase the distance which signal can travel withoutdegradation


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y Router:

y Connects two or more subnets

y Modem:

y Derive its name from Modulator-Demodulator.

y Modulates an analog signal to encode digital information,

and also demodulates such a carrier signal to decode the

transmitted information.

yThe goal is to produce a signal that can be easily transmittedand decoded to reproduce the original digital data.


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THANK YOU!!

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