MobiFone Corporation has become the first telecommunications services provider in Vietnam to launch a Wi-Fi Calling service after deploying technology supplied by Taqua, which supplies IP communications systems, applications and services to mobile and fixed operators.
The MobiFone service name is WiTalk. It uses Taqua’s Virtual Mobile Core (VMC), as well as Taqua’s Mobile Client to enable Wi-Fi Calling on Android smartphones that do not have native dialler support for Wi-Fi Calling.
For MobiFone, one of the largest mobile network operators in Vietnam, the addition of Wi-Fi Calling enables its subscribers to make phone calls and send text messages over any Wi-Fi network in the same way as they do when using the standard cellular network.
As a result, subscribers can receive high quality voice and messaging services in the places they spend most of their time, such as at home and the office. Taqua’s approach to Wi-Fi Calling is transparent to subscribers as it enables them to continue using the native dialler app, contacts app, call history and voice mail on their handset when connected to Wi-Fi or the cellular network.
To activate the new WiTalk service, MobiFone subscribers can download WiTalk by MobiFone from the Google Play Store. WiTalk is an effective solution for subscribers who may have a poor cellular network connection but have access to a good Wi-Fi network.
Also, when travelling out of country, MobiFone subscribers can text and make calls over Wi-Fi networks with lower call tariffs, rather than using regular international roaming services. In addition, these travelling MobiFone subscribers will not be charged for receiving calls by using WiTalk.
Taqua’s VMC is a virtualised IP Multimedia Subsystem (IMS) services core that enables rapid deployment of next-generation mobile voice and messaging services including VoWiFi and VoLTE.
Virtual Mobile Core
The VMC is a carrier-grade solution that integrates a number of standard IMS functions into a single software product, including a Telephony Application Server (TAS), IP Short Message Gateway (IP-SM-GW), Service Consistency and Continuity Application Server (SCC-AS), Serving Call State Control Function (S-CSCF) and Media Resource Function (MRF). Taqua’s VMC also includes a number of unique Fast Track features that dramatically reduce the time it take to deploy VoWiFi and VoLTE services.
Taqua’s Mobile Client is a downloadable application for Android smartphones that enables standards-based Wi-Fi Calling capability. Developed for handsets that do not include native VoWiFi support, the Mobile Client provides a true native Wi-Fi Calling user experience. By including Taqua’s mobile client in their Wi-Fi Calling deployments, operators can increase the availability of the service to their installed base of subscribers.
“We chose Taqua because we wanted to come to market fast, and because they have a proven track record in deploying Wi-Fi Calling with Tier 1 mobile operators around the world,” said Mr. Nam Bui Son, deputy managing director of MobiFone Corporation at MobiFone. “MobiFone always uses creativity to provide our subscribers with effective solutions in order to help them with ‘Connecting values and Evoking potential’.
“After our evaluation of vendors, we turned to Taqua and they were able to very quickly integrate their system into our core network and complete our rigorous trial. With the completion of this trial, we have now begun to roll out the commercial service offering to our subscriber base. In the near future we hope to extend WiTalk to overseas Vietnamese.”
“With Taqua’s fully-integrated, end-to-end solution, MobiFone was able to install, turn up, test, and move to commercial availability in record time – less than 90 days,” said Ken Kolderup, CMO of Taqua. “By leveraging the unique Fast Track features our Virtual Mobile Core, mobile operators can bring Wi-Fi Calling services to market in one tenth the time and at one tenth the cost of solutions from other vendors.”
Why deploying VoWiFi can provide operators with a commercial advantage