US 12,149,920 B2
Calling method, storage medium, and terminal
Wanying Wang, Guangdong (CN); and Chenli Gao, Guangdong (CN)
Assigned to HuiZhou TCL Mobile Communication Co., Ltd., HuiZhou (CN)
Appl. No. 17/618,565
Filed by HuiZhou TCL Mobile Communication Co., Ltd., Guangdong (CN)
PCT Filed Dec. 19, 2019, PCT No. PCT/CN2019/126568
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2021/103214, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911181063.0 (CN), filed on Nov. 27, 2019.
Prior Publication US 2022/0248292 A1, Aug. 4, 2022
Int. Cl. H04W 4/90 (2018.01); H04L 65/1016 (2022.01); H04W 36/00 (2009.01)
CPC H04W 4/90 (2018.02) [H04L 65/1016 (2013.01); H04W 36/00224 (2023.05)] 15 Claims
OG exemplary drawing
 
1. A calling method, comprising steps of:
when a terminal receives a call instruction, triggered by a communication identification from a user input, under a voice over long-term evolution (VoLTE) network or a voice over WIFI (VoWIFI) network, determining whether the communication identification is a communication identification supported by a current terminal based on the communication identification as well as a pre-customized phone number and a phone number supported by a Subscriber Identity Module (SIM) card that are supported by a current operator network;
in response to determining that the communication identification is not the communication identification supported by the current terminal, sending a verification request to a verification server based on an IP multimedia subsystem (IMS) network;
receiving a response message returned by the verification server based on the verification request;
determining a type of the communication identification according to the response message; wherein a type of communication identification includes a type of emergency numbers and a type of common numbers; and
according to the communication identification and the type of the communication identification, switching a network mode of an operator network to which the terminal is currently connected to a target network mode to initiate a call process, sending an emergency call request based on a 2G/3G network when the type of the communication identification is an emergency communication identification specified by the 3rd Generation Partnership Project (3GPP) protocol and sending a common call request based on the 2G/3G network when the type of the communication identification is not an emergency communication identifier specified by the 3GPP protocol;
wherein the response information carries a type identifier configured to determine the type of the communication identification by identifying a prefix of the type identifier and determining the type of the communication identification according to the prefix;
wherein a signaling of the emergency call request is emergency setup, and a signaling of the common call request is setup.