Enabling businesses with unhindered global connectivity

The challenges of making it big in the international market are plenty; however, with us, communication won’t be one. With Tata Communications’ Global SIP network, you can now enrich your business’ unified communication strategy as per your requirements. Our Global SIP Connect service empowers service providers and allows them to serve customers even in markets not yet covered by their networks. “Automate & Integrate your business applications with Powerful SIP Trunking APIs to order numbers instantly.” Contact us at: api@tatacommunications.com

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Explore our SIP trunking solutions

Enterprise Voice Solutions

Tata Communications offers you the opportunity to retain and enhance customer conversion with hosted voice solutions with our cutting-edge Managed Voice over IP (mVoIP) services. Using international calling over the internet, we ensure complete connectivity and superior call quality.

Bring Your Own Carrier

Provides a flexible route to the cloud for business leaders, giving the ability to choose a communications platform that best fits organizations and plug into the contact centre, conferencing, or unified communications platform.

India Voice Service

Take the trusted route with regulatory-compliant, digitally enabled domestic and international calling for all your unified communication and collaboration deployments

  • Enterprise Voice Solutions

    Tata Communications offers you the opportunity to retain and enhance customer conversion with hosted voice solutions with our cutting-edge Managed Voice over IP (mVoIP) services. Using international calling over the internet, we ensure complete connectivity and superior call quality.

  • Bring Your Own Carrier

    Provides a flexible route to the cloud for business leaders, giving the ability to choose a communications platform that best fits organizations and plug into the contact centre, conferencing, or unified communications platform.

  • India Voice Service

    Take the trusted route with regulatory-compliant, digitally enabled domestic and international calling for all your unified communication and collaboration deployments

Benefits Global SIP Connect brings to your business

Better customer experience, lesser complexities

Our centralized video and voice connectivity delivers two key benefits. It heightens the customer experience while bringing down the scalability challenges.
Better customer experience, lesser complexities
Our centralized video and voice connectivity delivers two key benefits. It heightens the customer experience while bringing down the scalability challenges.

Hear from our customers

  • Kiran Varma
    Associate Director - IT Services , Dr Reddy's Laboratories Limited

    Inherent network security, along with the performance and resilience of the Tata Communications Global VPN, come as part of the package. That makes us supremely confident in the decision we took.

  • Satish Kumar Patial
    Manager - Network Operations , Cotiviti

    Something I like about Tata Communications is their its network reachability that enables us to connect our remote sites and destinations.

  • Piramanayagam S
    , NewAge Software & Solutions

    We have been using Tata Communications services for the past 10 + years and found them the best in the market. The service delivery is fast, responses from the team are very quick, fault in the connection is limited and above all we get proactive communication about any maintenance or shut down that helps us plan things better. We look forward to the same support in future.

Hear from your peers

Great customer reviews and industry awards like Gartner Magic Quadrant put Tata Communications in a leading position in 2022 for Network Services globally 9th time in a row.
4.7/5.0
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Frequently Asked Questions

  • Session Initiation Protocol (SIP) trunking is a service offered by a communications service provider that uses the protocol to provision voice over IP (VoIP) connectivity between an on-premises phone system, and the public switched telephone network (PSTN).

    SIP is used for call establishment, management and teardown. SIP trunking is typically sold as a replacement for digital Primary Rate Interfaces (PRIs), which are based on time-division multiplexing (TDM).

    SIP trunking is widely deployed by communications service providers across the globe, many of which are using it to replace their TDM-based services. By delivering SIP trunking over existing Ethernet or Multiprotocol Label Switching (MPLS) network infrastructure, the providers reduce the cost and management complexity associated with legacy digital platforms while also provisioning additional features.

  • Technically, there is no set number of channels in a SIP trunk. The number of channels on your SIP trunk will expand and contract as you connect and disconnect calls. So, if you have 20 calls going at once, your SIP trunk will have 20 channels to accommodate these calls

  • A session border controller (SBC) is a network element deployed to protect SIP-based voice over Internet Protocol (VoIP) networks.

  • SIP trunks offer greater flexibility than PRI by connecting calls over the internet using an internet connection. It handles as many concurrent calls as your PBX and bandwidth supports. IT experts enjoy SIP trunk services because they maintain full control of their PBX and pair it with the scalability of the cloud.

  • A SIP trunk can have as many channels as you need. Most SIP trunk providers sell channel capacity in batches, but you could have 1 million channels in your SIP trunk if that's how many calls you potentially had to and from your business