Confidential & Proprietary ©2008 Tata Communications, Ltd. All Rights Reserved. Enterprise IPVoice Connect 23 Oct 2008

Confidential & Proprietary©2008 Tata Communications, Ltd. All Rights Reserved.

Enterprise

IPVoice Connect

23 Oct 2008

2Confidential & ProprietaryEnterprise

Agenda

_ Who is Tata Communications_ Understanding TDM vs. IP _ What is IPVoice Connect_ IPVoice Connect Architecture_ Benefits of an IPVoice Connect Solution_ What Reports are Available_ Why Tata Communications


Let’s talk Terminology

_ TDM – Time Division Multiplexing is a type of multiplexing in which two or more bit streams are transferred simultaneously as sub-channels on one communication channel, but are physically taking turns on the channel.

_ SIP – Session Initiation Protocol is a signaling protocol used for setting up and tearing down multimedia communication sessions such as voice and video calls over an IP based network.

_ ITFS – International Toll Free Service is a service available in certain countries around the world that operates very similar to 1-800 services. This is a country by country service.

_ UIFN – Universal International Free-Phone Number is a service similar to ITFS but the 1-800 like number is valid across multiple countries.

_ DID – Direct Inward Dialing is a feature offered by telephone companies so the PBX can route the call to the desired person or bureau within the organization.

_ MOS – Mean Opinion Score is a feature offered by telephone companies so the PBX can route the call to the desired person or bureau within the organization.

_ SBC – Session Border Controller is a device in VoIP networks that exerts control over the signaling involved in setting up, conducting, and tearing down calls.

Confidential & Proprietary

Who is Tata Communications?


Tata Communications Leadership Landscape

State-of-the-art Infrastructure_ 200,000 route km global

network_ 300 points of presence

(PoPs)_ 20+ terabit submarine

capacity_ ~1M sq. feet of data

center space

State-of-the-art Infrastructure_ 200,000 route km global

network_ 300 points of presence

(PoPs)_ 20+ terabit submarine

capacity_ ~1M sq. feet of data

center space

Customers_ 1,500 global carriers_ 600 mobile operators_ “Fortune 1000” of India_ 5,000+ SMEs in India_ 500,000 Internet and

broadband subs

Customers_ 1,500 global carriers_ 600 mobile operators_ “Fortune 1000” of India_ 5,000+ SMEs in India_ 500,000 Internet and

broadband subs

Industry Leader_ #1 global wholesale voice_ #1 global submarine cable

capacity_ #1 international long distance

services in India_ #1 enterprise data services

in India_ #1 Internet services in India

Industry Leader_ #1 global wholesale voice_ #1 global submarine cable

capacity_ #1 international long distance

services in India_ #1 enterprise data services

in India_ #1 Internet services in India


Consolidated Financials

USD Million, as per US GAAP

Financial Highlights

FY05 FY06 FY07

Operating Revenues 744 1022 1995

EBITDA 149 189 293

As of March 31, 2007

Market Capitalization (as on Feb 29, 2008)

Shareholders

USD 3.5 Billion


Our Vision, Commitment and Strategy

VisionDeliver a new world of communications to advance the reach and leadership of our customers.

CommitmentInvest in building long-lasting relationships with customers and partners and lead the industry in responsiveness and flexibility.

StrategyBuild leading edge IP-leveraged solutions advanced by our unmatched global infrastructure and leadership in emerging markets.


Our Strengths

India Enablement

Global Submarine &

IP Reach

Integrated Wholesale Services

_ #1 International and Enterprise data services in India

_ Relationships with Top 2000 enterprises in India including Fortune 500 companies

_ Best connectivity to India and expanded reach within

_ Owned cable network across the globe: $1Bn investment

_ Tier-1 Global IP Network and leading ISP in India

_ Unique assets and connectivity in Asia, Middle East, Africa

_ #1 wholesale international voice provider

_ Suite of voice, data, IP, signaling and outsourcing services

_ Over 1500 carrier relationships including 600+ mobile operators


India Leadership

India Enabled

A New World

_ International & Internet bandwidth led

_ Expansion into NPLC, IP / MPLS & Ethernet

_ Global MPLS & Ethernet_ Targeted fiber investments _ Expansion of Managed

infrastructure, collaboration & security

_ Emerging Market (India + Asia + South Africa) leadership

_ Global MPLS_ Data center expansion_ Introduction of Global Ethernet &

managed services_ WiMAX-led last mile access in

India

2005-06 2006-07 2008-102003-04

Enterprise | Strategic Evolution


Global Transmission | Submarine Cables


_Global MPLS Services

Tata Communications MPLS Global VPN Network


Major Investments | Managed Services

Managed ITInfrastructure Services

_ Collocation Services

_ Managed Hosting Services

_ Managed Storage Services

_ CPE-Based Services

_ Cloud-Based Services

_ Professional Services

_ Audio and Web Conferencing Services

_ Business Messaging & Collaboration Services

_ Hosted Contact Center

Services

_ Managed Voice Services

Managed SecurityServices

Managed Application \Services


TDM vs. IP


Traditional TDM Connectivity

_Direct connections to each PSTN limiting redundancy/resilience

_Unable to offer advanced network-based features

_No dynamic bandwidth capability


IP Connectivity_ Single connection

to IP cloud delivers calls to multiple PSTNs

_ Ability to use bandwidth dynamically because of any-to-any connectivity.

_ Lower overhead top provision and maintain

_ Advanced features easy to implement and access.


Today’s Call Signaling Technologies

_ Signaling path and call path are the same

_ Each switch must have all routing information causing longer implementations.

_ All calls traverse public PSTN

_ Signaling path and call path are Separate

_ Lower management overhead as only Gatekeepers or Route servers need to have routing information

_ Only off-net calls must traverse the public PSTN


What is IPVoice Connect?


What is IPVoice Connect

IPVoice Connect allows you, the customer, to use your existing PBX ports, regardless if they are TDM or IP to communicate, both inbound and outbound, over the Tata Communications MPLS network with a world-class global telephony infrastructure.

By using the MPLS network, your outbound calls will be routed to the nearest, Enterprise quality, telephony gateway to ensure the best call quality, while providing some of the best calling rates.

Your inbound calls will be gathered at the telephony gateway nearest to the point of origin, then placing the call on the MPLS network we will route it onwards to its’ final destination based on routing hierarchy you have provided.


What is IPVoice Connect (continued)End to end solution managed by Tata Communications which includes:

_ Premise Router (procured, delivered and monitored by Tata Communications)_ Local Loop to the closest MPLS Edge router_ National and International MPLS Network_ Call termination to Tier 1 carriers in USA, UK, Australia and ROW_ Call aggregation via ITFS, UIFN & DID numbers across the Globe

Enterprise quality of service level for voice calls termination

Built in Network level and Carrier Level redundancy

Usage based billing, per minute of call connection

Billing Flexibility


What is IPVoice Connect (continued) Lets set the right expectations

_ What IPVoice Connect is_ A GLOBAL service

_ The first step towards IP Telephony

_ Part of an overall VoIP migration strategy

_ Supports both inbound (ITFS, UIFN & DID) and outbound calling

_ Because the call stays on the network longer you get _ More cost effective and_ better quality alternative to incumbent carriers

_ Connects multiple protocols: TDM, SIP & H.323

_ What IPVoice Connect is not _ It is not a PBX replacement service

_ It is not a service for location to location connectivity


IPVoice Connect Architecture


Typical Customer Network architecture

_ No convergence in the Data and voice networks or technology _ Usually multiple providers to manage and negotiate


IPVoice Network View

International Inbound and Outbound off-net voice solution over Managed MPLS network


IPVoice Connect Call Flow

V

V


IPVoice Connect Delivery Network Overview

MPLS NETWORK & PRODUCT OVERVIEW

_ OC-192 Backbone_ GSR 12xxx Core Routers_ GSR 12xxx, 7609, 75xx Access Routers

_ Ownership of underlying transmission route cables, multiple cable paths and redundancy

_ State of the art Metro E network deployed in key cities in India

_ Cisco based Layer 3 VPN solution utilizing RFC 2547bis and the industry standard Label Distribution Protocol

_ MPLS over Glass*_ Cisco based Layer 2 VPN solution utilizing

Martini draft*_ Supports Static, OSPF, EIGRP & BGP routing

between the CE and PE devices*_ Fast Re Route feature that enables SONET like

failover in <50ms, Traffic Engineering deployed end to end*

* Unique Value Propositions for TataCommunications

_ OC-192 Backbone_ GSR 12xxx Core Routers_ GSR 12xxx, 7609, 75xx Access Routers

_ Ownership of underlying transmission route cables, multiple cable paths and redundancy

_ State of the art Metro E network deployed in key cities in India

_ Cisco based Layer 3 VPN solution utilizing RFC 2547bis and the industry standard Label Distribution Protocol

_ MPLS over Glass*_ Cisco based Layer 2 VPN solution utilizing

Martini draft*_ Supports Static, OSPF, EIGRP & BGP routing

between the CE and PE devices*_ Fast Re Route feature that enables SONET like

failover in <50ms, Traffic Engineering deployed end to end*

* Unique Value Propositions for TataCommunications

MPLS VPN SERVICE OFFERINGS

_ Layer 3 VPN Services_ Full Mesh_ Hub & Spoke_ Partial Mesh, Extranet, Intranet

_ Layer 2 VPN services_ Multicasting_ Remote VPN Access

_ Site and Mobility Options

_ Layer 3 VPN Services_ Full Mesh_ Hub & Spoke_ Partial Mesh, Extranet, Intranet

_ Layer 2 VPN services_ Multicasting_ Remote VPN Access

_ Site and Mobility Options


IPVoice Connect Class of Service

_ Tiered bandwidth assigned to each port_ Congestion Avoidance will come into effect

when the traffic is more than the contracted BW.

_ The total BW can’t be more than the contracted port value in all the cases


IPVoice Connect Benefits


IPVoice Connect Benefits

_ Greater optimization of bandwidth for voice and data _ MPLS network provides preferential treatment for CoS 1 bandwidth so call quality can be

preserved end-to-end without affecting Data traffic flows.

_ Reduction in equipment necessary to handle both Data & Voice infrastructures.

_ Administration costs are no longer duplicated ( monitoring , performance , escalations to multiple providers, etc.)

_ Enjoy the benefits of VOIP (eg. Remote access, Lower cost of integrated access)_ Network Service Levels

_ Service Uptime - > 99.5% (Guaranteed)

_ Jitter - within the limit of 15msec (Target)

_ Packet Loss - < 0.05% (Target)

_ Latency - within 300 msec (Target)


IPVoice Connect Benefits (continued)

_ PBX’s (IP orTDM) can be connected to IPVoice Connect network._ SIP Gateway at customer premise work directly with the network SIP Servers._ Centralized SIP Servers have predefined routes for all prefixes._ IPVoice Connect to work both for Inbound/Outbound Off-net across geographies_ On-site SIP gateway to negotiate codec (G.729), SIP/H.323 setup_ Dual access, Dual premise SIP gateways possible._ Dual carriers at each geography_ Inbound traffic can be provided in over 90 countries through ITFS/UIFN services.


IPVoice Connect Performance Monitoring System


IPVoice Connect Reporting accessible by the customer The following service performance metrics are available to you when log in to the IPVoice Connect portal :

Quality of Service Reports

The following statistics will be available to you in both textual and Graphical formats :_ Call Attempts _ ASR % (Answer to Seizure Ratio)_ NER % (Network Efficiency Ratio)_ Average PDD (Post Dial Delay)

Voice Quality Parameters Report _ MOS (Mean Opinion Score)_ Jitter _ Packet Loss_ Round Trip Delay


IPVoice Connect Reporting time PeriodsThe reports mentioned on the previous slide are near-real time statistics and shall be available with the following time increments:

_ 15 mins call statistics reports_ Hourly call statistics reports_ Daily call statistics reports_ Weekly call statistics reports_ Monthly call statistics reports


IPVoice Connect Overall Quality Report Snap shot QoS Report- Data Format


IPVoice Connect ASR report in Graphical and Textual Format


IPVoice Connect NER Report in Graphical and Textual Format


IPVoice Connect Network & Voice Quality Report


IPVoice Connect MoS Report in Graphical & Textual Format


Why Tata Communications’ IPVoice Connect Service Geographically disbursed

_ Keeps the call on the MPLS network as long as possible which provides for better monitoring and call quality.

_ Reduces per minute cost of calls.

Uses global MPLS infrastructure to ensure reliable delivery of voice content_ Calls traverse a network with stringent requirements around jitter and packet loss as well

reliability

Managed end-to-end service_ One company to report any data or telephony problems_ Lower implementation and Management overhead

Improved usage of existing access bandwidth_ Allows for the use of non-busy voice bandwidth for data transfer automatically

Reduction in operating & future capital expenses

Documents

Confidential & Proprietary ©2008 Tata Communications, Ltd. All Rights Reserved. Enterprise IPVoice Connect 23 Oct 2008