US Patent Issued to VIVO MOBILE COMMUNICATION on May 19 for "Call establishment method and apparatus, electronic device, and readable storage medium" (Chinese Inventor)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,635,007, issued on May 19, was assigned to VIVO MOBILE COMMUNICATION Co. LTD. (Dongguan, China).

"Call establishment method and apparatus, electronic device, and readable storage medium" was invented by Wenfei Ma (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A call establishment method includes: in a case that a first INVITE request sent by a second electronic device is received and that an INVITE ACK message sent by the second electronic device is not received, receiving a second INVITE request; and in a case that it is determined that both the second INVITE request and the first INVITE request are sent by the second electronic device,...