US Patent Issued to T-Mobile USA on June 30 for "Emergency call real time text (RTT) to RTT exchange" (Washington, New York Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,671,969, issued on June 30, was assigned to T-Mobile USA Inc. (Bellevue, Wash.).

"Emergency call real time text (RTT) to RTT exchange" was invented by Jenniffer F. Lucas Cruz (Bellevue, Wash.), Oliver Rankine (Bellevue, Wash.), Gladys Martinez-Herrera (Monroe, Wash.) and Robert E. Golden (Liverpool, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Emergency calls that use real time text (RTT) in addition to audio face a challenge: between an originating endpoint (e.g., a cellular network) sending a session initiation protocol (SIP) invite and receiving the response (e.g., 200 OK) from a downstream terminating endpoint (e.g., a peering network), the m...