The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2026
Filed:
Dec. 15, 2023
T-mobile Usa, Inc., Bellevue, WA (US);
Jagannadha Anudeep Datla, Kent, WA (US);
Harikishore Allu Balan, Lynnwood, WA (US);
T-Mobile USA, Inc., Bellevue, WA (US);
Abstract
Methods and systems for switching a push-to-talk (PTT) session to a voice over IP session are described herein. In one implementation, a device configured to support PTT service may receive an interaction performed by a user with the device. The device then transmits a request to establish a PTT session with a second user to a PTT server connected to an evolved packet core (EPC) network. Once the PTT session is established, the PTT server may monitor the real-time audio quality of the PTT session. When the audio quality is determined to be low, the PTT server may send a notification to the device to switch the PTT session to a two-way audio session (e.g., voice over IP). Upon receiving the user's confirmation, the device may send a session initiation protocol (SIP) invite to an IP multimedia subsystem (IMS) to establish the voice over IP session.