Tata Communications

  (Redirected from Videsh Sanchar Nigam Limited)

Tata Communications Limited is an Indian telecommunications company previously known as Videsh Sanchar Nigam Limited. It was previously under the ownership of Department of Telecommunications, under the Ministry of Communications of the Government of India. It was sold by Government of India to Tata Group . Presently the company is part of the Tata Group.[1]

Tata Communications Limited
FormerlyVidesh Sanchar Nigam Limited (VSNL)
Founded1986; 35 years ago (1986)
FounderGovernment of India
HeadquartersMumbai, Maharashtra, India
Area served
Key people
Amur Swaminathan Lakshminarayanan (CEO & Managing Director)
  • Network Services
  • Network Security
  • Internet Services
  • Data Center Services
  • Enterprise
  • Cloud Telephony
  • Cloud Networking
RevenueIncrease17,100 crore (US$2.4 billion) (2021)
Increase4,123 crore (US$580 million) (2021)
Increase1,251 crore (US$180 million) (2021)
Total assetsIncrease21,306 crore (US$3.0 billion) (2021)
Number of employees
12,000+ (2020)

Tata's communications network spans more than 500,000 kilometres (310,000 mi) of subsea fibre and more than 210,000 kilometres (130,000 mi) of terrestrial fibre. The company has invested $1.19 billion in its global subsea fibre network.[2] It provides network services and software-defined network platforms, such as Ethernet, SD-WAN, content delivery networks (CDNs), the internet, Multiprotocol Label Switching (MPLS), and private lines. It has more than 400 points of presence (PoPs) with a data centre, Cloud (Private Cloud and Puiblic Cloud Management) and co-location in 44 sites.[3]

It is listed on the Bombay Stock Exchange and the National Stock Exchange of India. It also holds a stake on its Sri Lankan subsidiaries, Tata Communications Lanka.

The company is listed as one of AON Hewitt's Best Employers in India for 2017.[4]


The business was founded as Videsh Sanchar Nigam Limited (VSNL) in 1986. VSNL is credited to have brought the internet into the country.[5] After the Government of India launched Disinvestment of Public Sector Units in India, The international arm of VSNL (VSNL International) was launched in 2004. VSNL was completely acquired by the Tata Group and renamed as Tata Communications on 13 February 2008.

Tata communications global networkEdit

In 2009, Tata Communications and Tyco Telecommunications completed the TGN-Intra Asia cable system.

In 2012, the company completed its network across Egypt linking Europe to India. It created a subsea fibre network that circumnavigates the world. The 9,280-kilometre (5,770 mi) Eurasian section of the Tata Global Network runs across the Mediterranean Sea and the Middle East, connecting Mumbai with Marseilles. Also providing a low-latency connection with a round-trip delay of 92 ms, and speeds of between 2 Mbit/s and 10 Gbit/s.[6]

The company has more than 15 terabits per second of international bandwidth lit capacity.[7]

In January 2016, Windstream Communications announced it was extending its 100 Gigabit Ethernet (100G) network from New Jersey data center operator NJFX's presence at Tata's Cable Landing Station (CLS) in Wall Township, New Jersey, to Ashburn, Virginia's internet hub.[8]


Network and connectivity servicesEdit


Tata Communications offers Ethernet services that can connect its customers in global offices at speeds of up to 10 Gbit/s in point-to-point or multipoint configurations.[9]

Its Global Network provides flexible bandwidth options from 2 MB up to 10,000 MB using Fast-E, Gig-E, and 10 Gig-E. Its Ethernet services include: Global Dedicated Ethernet, External Ethernet Network-to-Network Interface, Low Latency Ethernet and Ethernet Over MPLS.[9]

Ethernet over MPLS is a high-performance, global MPLS backbone that streams audio video, live broadcasts, and IP services with the scalability and security of a private network.[9]

Its Ethernet services are certified by the MEF—a worldwide non-profit organization dedicated to improving carrier-class Ethernet products and services.[9]

Private lineEdit

Tata Communications International Private Line offers customers a variety of routing, uptime, and service options for global communications. It delivers voice, video and data connectivity. It is built on its subsea cable network, including a fibre-optic ring, and more than 20 consortium cables covering 300,000 km (190,000 mi) over 200 countries and territories.[10]

Content delivery networkEdit

In February 2011, as part of a strategy to enhance its global content delivery network (CDN), Tata Communications acquired BitGravity, a US-based CDN provider.[11] This acquisition enabled it to offer its customers a cloud-based service for content delivery, including the delivery of HTML, CSS, JavaScript, videos and live streaming HD.[12] This service was then integrated with other support services, like security, satellite teleports, fibre-based video network and transcoding.[12]

Data centresEdit

Tata Communications has a data centre network located in 44 locations worldwide.[13] Tata Communications data centres meet international standards for redundancy, and are integrated directly with its global IP network. Its collocation services provide regulated power, cooling and physical security for the server, storage and networking equipment.[13] In May 2016, in order to redeploy capital in other areas of its business, Tata Communications sold a 74% stake in its data centre business to Singapore Technologies Telemedia. Tata communications has more than 10,000 racks and 93,000 square metres (1,000,000 square feet) of Data center space.

Unified communicationsEdit

Tata Communications delivers a portfolio of Unified Communication and Collaboration (UCC) solutions[buzzword] worldwide. These services include: Global SIP Connect, Unified Conferencing, Unified Communications as a Service (UCaaS) and Hosted contact centre.[14]

Global SIP connectEdit

On 18 January 2016, Tata Communications launched a white-label Unified Communications solution[buzzword] called Global SIP Connect.[15] This solution[buzzword] was designed to address the voice requirements of its enterprise customers, while simultaneously expanding its Unified Communications portfolio. The SIP Trunking solution[buzzword] enables its service provider customers to consolidate and manage voice services, while providing all global on-net and off-net voice services to link their businesses globally.[15]

Unified communications as a service (UCaaS)Edit

Tata Communications Unified Communications as a Service (UCaaS) integrates and works with other service provider solutions[buzzword] including Microsoft and Cisco.[16] Its global UC services on the Microsoft Skype for Business platform provide a solution[buzzword] including conferencing, online meetings, instant messaging, voice and video.[16]

Hosted contact centre (InstaCC)Edit

Tata Communications InstaCC was launched at Enterprise Connect 2015 in Orlando on 16 March 2015. The UCC solution[buzzword] includes a series of outbound and Omni-channel communications, enabling its customers to quickly establish contact and call centres.[17]

Cloud servicesEdit

In October 2014, Tata Communications launched its IZO platform, “a global platform for enhanced hybrid multi cloud enablement”.[18] Tata Communications IZO Cloud Platform brings together 20+ cloud providers, three large hyperscale cloud platforms and 43+ data centres, that its customers can interconnect with.[18]

Under the IZO Cloud and Managed Hosting Services portfolio, Tata Communications provides various cloud and hosting solutions like Private Cloud (IZO Private Cloud), Container Services (IZO Cloud Containers), Cloud Storage (IZO Cloud Storage), Big Data/Analytics Platform (IZO Cloud Analytics Platform) and Public Cloud Assessment, Migration and Management under the IZO Managed Cloud for AWS, AZURE, GCP. Tata Communications also offers SAP HANA Hosting on Any cloud platforms(Private or Public), VDI solutions on Any Cloud, Govt. Community Cloud (GCC) and others. Tata Communications also offers Colocation services in the international market. Read More: https://www.tatacommunications.com/solutions/cloud

IZO Internet WANEdit

Tata Communications IZO Internet WAN is a global-internet-based WAN service. This service can be integrated with Tata Communications Global VPN solution[buzzword] to build a global hybrid network.[19] IZO Internet WAN reaches 42 countries, 700+ cities, over 1 million buildings and covers 85% of the world's GDP.[19]

IZO Private ConnectEdit

IZO Private Connect links businesses to leading cloud service providers including Amazon Web Services, Microsoft Azure, Google, Office 365 and Salesforce.com.[20] Its customers can connect using MPLS or Ethernet and gain access to Ethernet connectivity to Tata Communications’ data centres and across 85 third party data centres globally.[20] In addition to global connections, IZO Private Connect is available in 6 data centres in India. IZO Private Connect is now expanding to include internet direct connectivity in addition to MPLS and Ethernet. Connection speeds are available from 2 MB to 10 GB.

IZO Public ConnectEdit

IZO Public Connect is a cloud enablement service that provides a route for Tata Communications’ enterprise customers by tagging their data packets for pre-determined delivery over the public internet.[20]


In November 2016, Tata Communications launched its new addition to the IZO platform, IZO SDWAN.[21] The solution[buzzword], delivered as a managed service, combines IZO WAN with software-defined and virtualised network technologies in 130+ countries.[21] IZO SDWAN cloud service gateways are built next to cloud service providers in 20 locations across the globe.[21]

Media servicesEdit

Tata Communications offers a range of services and solutions[buzzword] for enterprises in all segments of media and entertainment, including gaming, hospitality, sports, leisure, education, news, music, cable and broadcasting.

In April 2015, Tata Communications launched its "Media Ecosystem".[22] The ecosystem combines traditional video contribution services with IP-connectivity. Services include: asset management, workflow management, channel origination, internet contribution feeds, OTT platform and transcoding as a service.[23]


Managed securityEdit

Tata Communications offers a complete array of managed security services, that provides enterprise customers with 24x7x365 protection from attacks.[24] Its managed security offering includes firewalls, threat management, intrusion detection and prevention, DDoS detection and mitigation, email security, vulnerability testing and management.[24]

Fraud preventionEdit

Tata Communications offers a fraud prevention toolkit to identify and proactively prevent fraudulent call activity.[25] The toolkit uses technologies including big data, analytics, machine learning, crowd sourcing, real-time monitoring, subscriber alerts and automated reporting.[25]

The toolkit monitors 30 million calls per day for fraud, and blocks over 400,000 fraudulent calls every day.[25] When the fraud fighting toolkit identifies a fraudulent call, Tata Communications blocks the number across its entire network.[25]



Tata Communications combined its Diameter Signalling exchange (DSX) platform with its IPX Connect service to offer its customers 3G/4G roaming.[26] It provides a solution for LTE roaming migration, supporting 2G, 3G and 4G roaming within one framework.[26] This framework addresses signalling, routing, inter-working, transport, clearing, settlement, business intelligence, security and service assurance.[26]


With an on-net signalling network, directly connecting 300 mobile network operators and with reach to 900+ mobile network operators, Tata Communication's interconnects mobile ecosystem players for messaging and roaming.[27]

Its signalling services can be delivered over a number of network options including TDM, IP, Global VPN and IPX Connect (SCCP over IPX). Also supported is signalling evolution from SCCP to Diameter, ready for IMS and LTE roaming capabilities.[27]


In March 2016, Tata Communications announced its partnership with messaging service provider Anam to create a Mobile Messaging Exchange designed to protect Mobile Network Operator customers' from fraud.[28] The service offers an A2P mobile messaging hub environment, that feature cloud-based centralised messaging exchanges between customers and enterprises/OTTs/SMS aggregators.[28] The Mobile Messaging Exchange combined with Anam's SMS firewall products is designed to provide reliable and secure SMS delivery for Tata Communications' customers.[28]


Tata Communications offers its customers a market model to distribute and promote their content for free, via its Sponsored Data Exchange.[29] The service leverages Tata Communications’ global network and carrier relationships to offer a cloud-based solution that supports the use of mobile data for customer loyalty and peer-to-peer gifting.[29]


Voice direct transitEdit

Voice Direct Transit creates a virtual direct to any of the 300+ mobile operators directly connected to its network. It provides full support for HD Voice, complies with GSMA's IPX specifications for direct transit and is future proof for operators migrating to Voice over LTE.[30]

Access servicesEdit

Tata Communications provides its customers with a full suite of Access Services, that cover 105 countries. Customers can receive toll-free calls from both fixed and mobile phones in more than 90 countries with ITFS.[31] They can provide a single number that is accessible from more than 45 countries worldwide, with UIFN. It also enables customers to purchase large volumes of numbers through its Bulk Local Number Service offering.[31]


In June 2016, Tata Communications launched its Wi-Fi+, a cloud communications solutions[buzzword] for its mobile network operator customers.[32] Operators are able to provide their customers with unlimited calling, messaging and data over high-quality, secure Wi-Fi.[33] It harnesses Tata Communications’ Cloud RTC expertise and iPass's more than 21 million Wi-Fi hotspots in more than 100 countries.[33]

In January 2017, Tata Communications announced its partnership with Bharat Sanchar Nigam Limited (BSNL) to provide 44 million Wi-Fi hotspots in more than 100 countries,[34] including rail systems and international flights.

Subsidiaries of Tata Communications LtdEdit

Tata Communications Transformation Services (TCTS), a 100% subsidiary of Tata Communications Ltd, provides business transformation, managed network operations, network outsourcing, and consultancy services to telecommunication companies around the world.

Tata Communications Payment Solutions Limited (TCPSL) formerly known as Tata Communications Banking InfraSolutions, is a wholly owned subsidiary of Tata Communications. TCPSL is one of the fastest growing Payment Solutions specialists in India offering end-to-end B2B and B2C solutions. Being a 100% Banking and Financial Services focused organisation, TCPSL offers one stop payment solutions to all categories of banks including PSU, Private, MNC and Co-operative banks. TCPSL's White Label ATM offering under the brand name Indicash marks its foray in the B2C space. With this it is the first White Label ATM service provider in the country. Under this service offering, TCPSL offers ATM services across the country through Indicash ATM network with special focus on semi urban and rural areas.

Innovation HubEdit

In September 2019, PGA European Tour and Tata Communications launched the Innovation Hub. This contest that offers the opportunity for start-ups worldwide to convert concepts into reality.[35]


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External linksEdit