Rosh Haayin, Israel, January 27, 2015. CALLUP, a provider of Value Added Services (VAS) and Mobile Device Management (MDM) solutions for the telecom industry, today announced that it will launch an innovative Wi-Fi calling system at the Mobile World Congress, to be held March 2-5, 2015 in Barcelona, Spain. The system – CALLUP Wi-Fi Calling – solves one of the most critical problems in the cellular industry: poor cellular phone coverage in buildings. The innovative solution will be displayed at CALLUP’s booth (Hall 5, Stand 5D81).

CALLUP Wi-Fi Calling enables operators to take advantage of the routine connection of subscribers to their Wi-Fi hotspot, allowing them to use their cell phones for voice calls and text messages over the IP network. This is done seamlessly and transparently to the user, and the call is automatically routed through the Wi-Fi hotspot from the circuit switch, to the IP network, while the subscribers use their Android native interface to make the calls or send text messages.

The solution is based on CALLUP’s patent-pending Roam Home Voice solution. The installed app seamlessly intercepts the voice calls and routes them via the home Wi-Fi router to the carrier’s IMS (IP Multimedia Subsystem). A sophisticated algorithm inspects IP quality and Wi-Fi signal quality prior to call initiation. The provisioning server enables the carrier rules enforcement, billing and charging, and ONM (Operation Network Management) activities.

“CALLUP’s innovative Wi-Fi Calling reduces the cost of operation and the need to install femtocells in homes that suffer from poor cellular coverage,” said Alon Roth, CALLUP’s CEO. “Wi-Fi Calling not only saves money for the operator, but enables better service for the subscriber at no additional costs.”

CALLUP Wi-Fi Calling is fully integrated with the operator’s BSS (Business Support System), IMS (IP Multimedia Subsystem) or softswitch, and is fully secured. Regulatory features are built in the solution.


Founded in 1999, CALLUP provides Value Added Services (VAS) and Mobile Device Management (MDM) Solutions. CALLUP is a subsidiary of the One1 Group, headquartered in Israel and listed on the Tel Aviv Stock Exchange (TASE: ONE). CALLUP's customer base spans the globe and includes fixed, mobile, VoIP telecom operators, MVNEs and MVNOs, as well as leading telecom providers that CALLUP serves as an OEM. For more information, visit


David Kanaan
Kanaan Public Relations
Tel.: +972-54-4255307
e-mail: [email protected]