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Voice over LTE (VoLTE) and Voice over Wifi (VoWi-Fi) core

Protect profitability while enhancing your IMS communication services offer

Meet demand for rich voice and video communication services with our comprehensive IMS/VoLTE portfolio. Our products and solutions provide all the tools you need. Deliver high-quality VoLTE, VoWi-Fi and multimedia services while maintaining a profitable network.


What is VoLTE?

Evolve to richer voice with Voice over LTE (VoLTE) and Voice over Wifi (VoWifi)

Voice communications, both in private and business life, will remain vitally important as communications networks evolve to 5G. Although often eclipsed by the attention to advanced data and multimedia services, voice is still considered the most important service by consumers and essential to any bundle.  

Voice over LTE makes voice over IP for commercial operators the industrial standard for the first time and paves the way towards 5G voice.

How does VoLTE help your business?

  • Maintain and expand business with HD voice and improved connectivity
  • Use IMS core for LTE to maintain revenue from today’s services. Provide top quality for your customers
  • Add a rich communications environment to voice services. Help your customers make their mobile access even more pleasurable and central to their lives
  • Provide a standardized and well-tested end-to-end solution to reduce the risks of integration
  • A core for all network access types and a common provisioning and management system help decrease operational costs
  • Evolve and converge your network to deliver voice and rich multimedia services across any network access
  • Optimize your network to improve margins on voice traffic. Enhance the customer experience and prepare for the migration to an all-IP network
  • Enrich digital content with horizontal service integration Flexible, adaptable and easy to implement, Nokia IMS products come ready integrated with best-of-breed partner products.

Disaster recovery in large VoLTE deployments

This case study describes how we implemented the largest VoLTE geo-redundancy disaster recovery solution rapidly and cost-efficiently for the 150+ million subscribers of Bharti Airtel.

What are the benefits of VoLTE?

Competitive, high-quality voice and video service over LTE

Fast time-to-market; quick, easy service development on top of LTE/ Wi-Fi

Full mobile voice service continuity

Full integration with existing network back office services

Core elements run on the same platform or in telco cloud, reducing total cost of ownership

Professional services for design, planning and integration

Why choose VoLTE?

Why are VoLTE and 4G calling critical enablers for 5G voice services?

Deploying VoLTE is strategically important. It is typically part of the migration of voice services from 3G and legacy CS mobile networks to the 4G LTE network. VoLTE is based on the IMS architecture, so the rise of VoLTE also coincides with Communication Service Provider (CSP) adoption of IMS.

How to harness the power of LTE for communication and 4G voice?

As subscribers demand more services for less money, it’s vitally important for operators to protect their profitability by reducing delivery costs. The answer is to eliminate the need for separate voice and data networks.

By providing VoLTE, an operator can enhance indoor coverage using Wi-Fi and extend its communication services with WebRTC. Voice over Wi-Fi (VoWiFi) and WebRTC use the same IMS core as VoLTE. Enable the same communication and multimedia services.

How to offer converged mobile and fixed services over any device using IMS?

Evolve towards an all-IP core, IMS is a high-performing core controller for LTE networks. Providing VoLTE, VoWiFi and multimedia services for multiple devices.  

IMS provides a standardized, future-proof network architecture with open interfaces. It ensures interoperability of multivendor equipment, combined with maximum reuse of existing network elements.  

The Nokia IMS-based product portfolio gives field-proven, efficient, and robust voice and multimedia services with Advanced Audio Coding with any access type – mobile, wireline or cable.

What is the evolution path of VoLTE?

The Nokia VoLTE solution offers a clear evolutionary path. It allows operators to take full advantage of LTE network according industry standards coexisting fully with existing voice core. VoWiFi and fixed, converged IP expand the user experience and enable operators to bundle services to differentiate their offering.  

Nokia VoLTE core, including IMS /TAS, SBC and HSS, provides a truly robust and reliable next generation voice and messaging service core.    

Our Rich Communication Suite (RCS) allows operators to offer their customers capabilities that make the mobile even more central to their private and business lives.

What are customers saying about Nokia's Voice over LTE solution?

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