Tuesday, February 26, 2013

Ericsson and China Mobile Complete Dual Mode HD Voice over LTE Call

At Mobile World Congress in Barcelona, China Mobile in demonstrating the world's first dual mode HD voice over LTE (VoLTE) call between TD-LTE and LTE FDD based on ST-Ericsson's multimode modem and Renesas Mobile' quad-mode chipsets.

Ericsson supported the demonstration by supplying its LTE TDD/FDD converged radio solution and IMS platform.

The companies said the demonstration further paves the way for the ultimate commercial launch of Voice over TD-LTE.  The demonstration also achieved HD quality TD-LTE voice service.   As of January 2013, operators in 45 countries have launched HD voice over WCDMA/GSM/LTE in 61 live networks, supported by mainstream devices.


  • In December 2012, Ericsson assisted China Mobile Hong Kong in demonstrating the world's first live, seamless, bi-directional LTE TDD/FDD interworking on the converged LTE TDD/FDD network.The launch of this converged network architecture, based on the recognized 3GPP standard, combines the power of both networks to benefit both China Mobile Hong Kong and its subscribers and the industry as a whole.