Emergency call method and apparatus, storage medium, and terminal

An emergency call apparatus, applied to a terminal, comprising:

• a network determination model, which is configured to determine whether a current network device supports an emergency call established on an Internet protocol multimedia subsystem (IMS) domain;
• an IMS domain module, which is configured to, in a case where the current network device supports the emergency call established on the IMS domain, establish the emergency call on the IMS domain;
• a circuit switched (CS) module, which is configured to, in a case where the emergency call established on the IMS domain fails, establish the emergency call on a CS domain;
• a state determination module, which is configured to determine whether the terminal is in a limited service state;
• a first state module, which is configured to receive system information broadcast by the current network device, if the terminal is in the limited service state;
• and
• a first calling module, which is configured to determine that the current network device supports the emergency call established on the IMS domain, if the system information carries a first emergency call identifier.

A terminal, comprising:

• a memory, a processor, and computer programs stored on the memory and executable by the processor, wherein the processor, when executing the computer programs, implements the following:
• determining whether a current network device supports an emergency call established on an Internet protocol multimedia subsystem (IMS) domain;
• in a case where the current network device supports the emergency call established on the IMS domain, establishing the emergency call on the IMS domain;
• and
• in a case where the emergency call established on the IMS domain fails, establishing the emergency call on a circuit switched (CS) domain;
• wherein before determining whether the current network device supports the emergency call established on the IMS domain, the processor further implements the following:
• determining whether the terminal is in a limited service state;
• wherein in a case where the terminal is in the limited service state, the processor implements determining whether the current network device supports the emergency call established on the IMS domain by:
• receiving system information broadcast by the current network device;
• and
• in a case where the system information carries a first emergency call identifier, determining that the current network supports the emergency call established on the IMS domain.