公开(公告)号：US20250150495A1

公开(公告)日：2025-05-08

申请号：US18503195

申请日：2023-11-07

Applicant: MEDIATEK INC.

Inventor： Ying-Cen Lai ,  Chien-Yi Wang ,  Nuan-Yu Yang

IPC: H04L65/1104 ,  H04L65/1016 ,  H04L65/1069

Abstract: A method for handling a call using Sessions Initiation Protocol (SIP) includes sending an INVITE or a first media type by a network side to user equipment, sending an UPDATE of a second media type by the user equipment to the network side, receiving an SIP global failure response for the UPDATE by the user equipment from the network side, sending an SIP success response for the INVITE of the first media type by the user equipment to the network side, receiving an ACK of the first media type by the user equipment from the network side, and establishing a call session of the first media type between the user equipment and the network side.