Upcoming ITU workshop on VoLTE and ViLTE service interoperability

An ITU workshop in Geneva, 1 December, will explore the challenges facing the interconnection of operators’ networks to enable the provision of interoperable, high-quality voice and video services over packet-based fixed-mobile hybrid environments. Learn more about the workshop and register to attend here…

The interconnection of subscribers of LTE-based networks remains a significant challenge to operators seeking to offer their customers high-quality Voice over LTE (VoLTE) and Video over LTE (ViLTE) services. The upcoming ITU workshop will discuss potential frameworks for VoLTE and ViLTE ‘roaming’, where interactions between subscribers of different networks will be supported by seamless packet-based, high-quality voice and video communications.

Domestic and international use cases of VoLTE/ViLTE services will be presented by China Mobile, NTT, KT, Türk Telekom and Swisscom. NEC and GSMA will offer analyses of the standards landscape for VoLTE/ViLTE interconnection. Rohde & Schwarz, HEAD acoustics, Huawei, Fraunhofer Institute, GSMA and Tunisian Regulator will explore technical challenges to the implementation of VoLTE/ViLTE services and solutions being developed in response. A showcasing event held in conjunction with the workshop will demonstrate a variety of VoLTE and ViLTE solutions currently on the market.

Towards an internationally agreed framework for VoLTE/ViLTE roaming

Interoperable voice and video services provided over packet-based IMT-Advanced (LTE-Advanced) networks are an attractive proposition to operators and their customers, but an internationally agreed framework for the interconnection of operators’ networks necessary to VoLTE/ViLTE international service interoperability has yet to emerge.  December’s workshop will interrogate the obstacles to be overcome en route to the agreement of such a framework. Building on the foundations established by the workshop, the potential for the international standardization of this framework will be analyzed by ITU’s standardization expert group responsible for ‘signalling requirements, protocols and test specifications’, ITU-T Study Group 11.

Fixed-network operators implementing LTE utilize IMS as the platform to establish voice and video calls. ITU-T Study Group 11’s analysis of VoLTE/ViLTE international service interoperability will be supported by the SIP-IMS standardization plan being carried out by ITU-T Study Group 11 in collaboration with the European Telecommunications Standards Institute’s Technical Committee for Core Network and Interoperability Testing (ETSI TC INT). This SIP-IMS standardization plan is guiding ITU-T’s development of international standards and related test specifications to provide a unified international reference for the implementation of SIP-IMS on fixed networks.

The upcoming ITU workshop on VoLTE-ViLTE roaming has been organized in response to the recommendations issued by the seventh annual Chief Technology Officers’ meeting held in Budapest, Hungary, 11 October. Industry leaders present in Budapest recognized the need to improve service interoperability in fixed-mobile hybrid environments, inviting ITU-T to encourage the rollout of high-quality, bi-directional services in fields such as voice and video.

Read more about the outcomes of the seventh Chief Technology Officers’ meeting here…  

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