US Patent Issued to T-Mobile USA on March 17 for "Unique call progress tone invocation timer per client or access type" (Washington Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,012, issued on March 17, was assigned to T-Mobile USA Inc. (Bellevue, Wash.).

"Unique call progress tone invocation timer per client or access type" was invented by Sabuhi Kiran Zaifuddin (Redmond, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the invention add information in the call initiation stage so that a client or device type and access type data may be embedded in the call request. Therefore, during the call-progress tone (Call Progress Tone), a processing server may then provide a logic to handle the different access type and/or client type to further enhance user experience."

The patent was filed on Oct. 4, 2022, under ...