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Voice over LTE (VoLTE)

VoLTE: harness the power of LTE for communication

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, enabling the same communication and multimedia services.

T-Mobile talks about their Un-carrier program, the ability to stay bold and shake up the industry by challenging the status-quo and how their partnership with Nokia has contributed to their success.


Nokia Voice over LTE - VoLTE inforgraphic

See the VoLTE infographic


Nokia VoLTE video – See VoLTE in action as Heather and Ismo show why it makes sense to activate 4G on your phone, how to make video calls, and how to benefit from high definition voice (HD) and voice call continuity. See also the infographic Voice over LTE(VoLTE)


Nokia VoWiFi video – See Voice over Wi-Fi in action as Heather and Ismo discuss coverage enhancement and integrated VoWiFi. They also show how a call can continue between VoWiFi and LTE without interruption, using a native dialer, with no need for extra applications or accounts. Cool!
See also the infographic Voice over Wi-Fi (VoWiFi)


Take full advantage of the LTE network:

  • 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

The Nokia VoLTE solution offers a clear evolutionary path that 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.

Explore our VoLTE related offering

IP Multimedia Subsystem (IMS) Core productsOffer converged mobile and fixed services over any device

Rich Communication Suite (RCS)Enhance VoLTE communication with RCS

Telco CloudTelco cloud provides unlimited network capacity to manage unpredictable data growth and offer a superior customer experience

Session Border Controller (SBC)Renew and migrate your session border controller to the cloud with Nokia

Cloud Packet CoreManage the explosion in data and signalling traffic

Partners & Ecosystem


White papers