Wi-Fi calling, also known as VoWiFi, or Voice over Wi-Fi, allows ordinary voice calls to be routed over Wi-Fi, including a handover between 4G and Wi-Fi networks. Siemens Convergence Creators’ AAA (Authentication, Authorization, and Accounting) product provides standard authentication and mobility control for all market relevant Wi-Fi gateways.
Wi-Fi and SIM based authentication
Being well into the deployment lifecycle of 4G network technology and getting ready for 5G requirements, the mobile operators’ approach between main releases is all about integrating access networks.
While carriers typically use untrusted public or partner Wi-Fi networks today where an encrypted data tunnel between the user device and the mobile network core is established to perform all IP communications, future designs may also include trusted, carrier-operated Wi-Fi networks or the mobile operators’ fixed network units.
Siemens Convergence Creators AAA already supports this functionality today and device vendors wisely include VoWiFi capabilities in more and more relevant devices they are introducing nowadays.
Designed as centralized authentication element in mobile and fixed-mobile convergence networks, Siemens Convergence Creators’ AAA goes hand in hand with the company’s Policy Control (PCRF) product Siemens Policy Manager which uses the same platform and framework.
Future enhancements and use cases thus can be implemented into this AAA solution on short notice without compromising telco-grade requirements whatsoever.
Roland Steiner, Vice President LTE Business Unit Siemens Convergence Creators: “Advantages for mobile operators using our AAA include having Wi-Fi as an alternative mobile network, reducing the load on their 4G LTE networks, and improving indoor coverage and customer loyalty. Voice over Wi-Fi is proof that investments into an All-IP infrastructure provide substantial advantages in a reasonable timeframe and we’re proud to be an integral part of it.”
About Wi-Fi Calling by Siemens Convergence Creators
For more information about Siemens Convergence Creators' Wi-Fi Calling please visit
About Siemens Convergence Creators
Siemens Convergence Creators GmbH, headquartered in Vienna, provides their customers with innovative products, turnkey solutions and services in the fields of communication networks, service and customer management, public safety and security, multimedia infotainment, as well as space technology.
Among the most important customers are the top players in their respective industrial sectors, i.e. telecommunications, media (TV, publishing houses), transport (railways, aircraft manufacturers, airlines and airports), space, public safety (action forces) and energy (wind power, oil and gas).
Siemens Convergence Creators presence in emerging and mature markets like Central and Eastern Europe, Germany, USA, India, and China together with their powerful network of partners provide a strong basis for activities all over the world.
For more information about Siemens Convergence Creators please visit
Contact for journalists
Siemens Convergence Creators GmbH
Head of Marketing & Communications