ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,221, issued on April 7, was assigned to VIVO MOBILE COMMUNICATION Co. LTD. (Guangdong, China).
"Call processing method and call processing apparatus" was invented by Yuanze Mao (Guangdong, China) and Zhonghuang Li (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A call processing method and a call processing apparatus. The call processing method is used for a terminal. The method includes: receiving a voice data packet sent by a network server; and sending first signaling to the network server in a case that the voice data packet is abnormal, where the first signaling is used to enable the network server to switch at least one of: a ...