China Mobile and Alcatel-Lucent are showing their progress in the development of network functions virtualization (NFV) for mobile operators at Mobile World Congress.

Nokia Solutions and Networks has successfully completed an extensive set of test cases for Voice over LTE (VoLTE) in China Mobile’s (CMCC) pre-commercial TD-LTE network in Fuzhou. The trials included NSN’s enhanced Single Radio Voice Call Continuity (eSRVCC) solution for a seamless experience and optimized behavior.

U.S. Carrier Sprint has selected BroadSoft’s BroadWorks platform to enhance VoIP services made available by Sprint to both its consumer and business customers, BroadSoft announced today.

ZTE has announced that company helped China Mobile deploy voice over LTE (VoLTE) services on the operator’s commercial TD-LTE network in Guangzhou.

Huawei and China Mobile held a successful demonstration of international HD voice and video calls between China Mobile's VoLTE trial networks in Chengdu and Hangzhou and South Korea Operator's VoLTE networks recently.

Japan's SoftBank Mobile has selected Ericsson to provide and integrate its end-to-end network solution for voice over LTE (VoLTE). With VoLTE as a basis, consumers will get HD voice and video calling alongside other telephony services, while using simultaneous LTE data services on LTE smartphones.

Nokia Solutions and Networks has launched voice call continuity (VCC) to complement Voice over LTE (VoLTE) by enabling seamless handovers to 2G or 3G networks. According to company, the enhanced solution optimizes VoLTE network connection quality and control with better bearer switching and shorter delay.