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ZTE and CSL Successfully Complete HD VoLTE Call with ESRVCC
Published on:
ZTE says that it has conducted a High Definition (HD) voice over LTE (VoLTE) call using enhanced Single Radio Voice Call Continuity (eSRVCC) for Hong Kong based mobile network, CSL.
The mobile network successfully conducted a HD VoLTE call hand-off to 3G with eSRVCC based pre-commercial network. HD voice will keep service continuity before and after hand-off.
All network equipment used in this demonstration was provided by ZTE.
The Adaptive Multi Rate Wideband(AMR-WB) speech codec was supported in the HD VoLTE call demonstration. This HD voice speech codec provides improved speech quality due to a wider speech bandwidth from 50 to 7,000Hz and ensures no significant impact on radio-frequency capacity due to the efficiency of codec suitable.
"VoLTE provides an improvement in spectral efficiency and is needed to increase network capacity and allow to re-farm the 3G spectrum in the future," said Christian Daigneault, CSL Chief Technology Officer. "This HD VoLTE call using eSRVCC will shorten call set-up time, assure good handover to 3G where required and creates a better user experience for our customers. CSL has been the first to bring Dual Band LTE at 1800/2600 MHz in Asia and will continue to bring a superior network experience to its customers. The success of this demonstration is an important milestone in the development of LTE voice services in the mobile industry."
Tags: [zte] [lte] [csl] [volte] [Hong Kong]
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