14 October 2014 - The company

China Mobile, KPN and iBasis Successfully Complete First International VoLTE Roaming Calls based on IMS Architecture

China Mobile, KPN and iBasis today announced the first successful implementation of international VoLTE roaming between mobile operators based on IMS local breakout architecture with home routing solution.

Enabled by KPN subsidiary iBasis, the mobile operators are preparing for a smooth commercial rollout of VoLTE roaming to their subscribers in China and the Netherlands respectively.

Globalization and increasing demand for the high-quality of service of LTE are driving mobile operators to implement VoLTE and VoLTE Roaming as the next logical step after deploying LTE in their national networks and LTE data roaming internationally. China Mobile will commercially launch VoLTE service in China at the end of 2014. China Mobile International and iBasis, parties with proven track records in delivering international IP-based services, are providing the IPX interconnectivity between China Mobile and KPN. Key network components were provided by Huawei.

Customer experience

VoLTE represents a significant gain in network efficiency and end-user convenience. For example, customers will be able to make voice calls over the LTE network while downloads continue in the background. Other features, including HD (high-definition) voice and the ability to switch instantly between crystal clear voice and high quality video, provide an unparalleled user experience. The trial proves the potential that China Mobile and KPN customers could enjoy the full VoLTE experience while traveling abroad when VoLTE has commercially been made available to its customers.

iBasis Support for VoLTE

As Mobile operators expand beyond their domestic deployments to offer international VoLTE calling, they face significant challenges as they strive to provide a seamless, high-quality experience for their subscribers and to fully realize the economic value of the new technology. The iBasis solution supports both local breakout and home routing and helps operators overcome challenges such as global reach for VoLTE calls, signaling and media interworking between VoLTE and non-VoLTE networks, supporting VoLTE global roaming and exploiting HD Voice capabilities. With a single connection to the iBasis multiservice IPX, operators gain access to hundreds of destination countries around the world and to the full portfolio of iBasis Voice and Data capabilities. iBasis also provides a robust VoLTE test environment with interconnection and test locations around the world to help operators ensure that they are ready for commercial launch.

About China Mobile

China Mobile Limited is a world-leading mobile communications service provider with the largest mobile subscriber base of nearly 800 million and the largest mobile communications network globally. It has been listed on Hong Kong and New York stock exchanges. In 2013, the Company was ranked among the FT Global 500, and Forbes Global 2,000 Leading Companies, and was selected as a composite stock in Dow Jones Sustainability Index Emerging Markets. The Company currently enjoys an AA3 / Stable Outlook rating by Moody’s and an AA- / Stable Outlook by S&P, the same rating as the sovereign rating of China.

About KPN

KPN is the leading telecommunications and ICT service provider in the Netherlands, offering wireline and wireless telephony, internet and TV to consumers and end-to-end telecom and ICT services to business customers. In Belgium, KPN is active in wireless operations and holds a number three market position through BASE Company. KPN provides wholesale network services to third parties and operates an efficient IP-based infrastructure with global scale in international wholesale through iBasis.

About iBasis

A wholly-owned KPN company, iBasis is a leading international voice carrier and provider of value-added services for mobile operators, including messaging, SS7 and Diameter signaling and 3G and 4G (LTE) roaming, for many of the world’s largest fixed and mobile operators, as well as OTT and other broadband service providers. Find out more about iBasis at www.ibasis.com and join the conversation at lteroaming.info, the iBasis blog site providing insights about LTE roaming, VoLTE, IPX and related topics.