Telecom equipment vendor Nokia Solutions and Networks (NSN) has conducted live video call and several test cases for Voice over LTE (VoLTE) in China Mobile’s pre-commercial TD-LTE network in Fuzhou.
NSN claims that this is the world’s first live video call on Voice over LTE in a pre-commercial TD-LTE network.
The mobile vendor used its enhanced Single Radio Voice Call Continuity (eSRVCC) solution for a seamless experience and optimized behavior.
As part of the testing the performance of VoLTE in its TD-LTE network, telecom service provider China Mobile set up parallel VoLTE trial projects with several mobile broadband equipment vendors in different parts of the country.
NSN completed the first TDD eSRVCC video call on January 4, 2014, and an extensive set of tests on January 29, 2014, to demonstrate the advantages of providing voice services as an integral part of the LTE network.
A video call made in an LTE network that utilizes eSRVCC allows a high-definition (HD) call that is established in the IP Multimedia Subsystem (IMS) over VoLTE and then handed over to 2G/3G using voice continuity. This means the voice portion of the call can continue seamlessly even if 4G coverage is no longer available.
“VoLTE will bring sophisticated voice-based and video-based services and high-definition voice quality to mobile subscribers. The video to voice handover is a good example of how the new technology can be seamlessly integrated with the existing mobile broadband networks,” said Michael Clever, senior vice president of Core at NSN.
NSN says the VoLTE solution will be commercially available in March across both TDD and FDD variants of LTE.