Emergency Call Access Method and System, Base Station, and Terminal

A device, comprising:

• a receiver;
• a processor;
• and
• a sender;
• wherein the receiver is configured to receive a call access request from a terminal and capability information of the terminal;
• wherein the processor is configured to determine whether the call access request carries a type of a call that the terminal requests accessing, wherein the type of the call is an emergency call, and to trigger the sender on condition that the call access request carries the type of the call that the terminal requests accessing wherein the type of the call is an emergency call;
• and
• wherein the sender is configured to send configuration information of a default bearer that corresponds to the capability information to the terminal upon being triggered by the processor without sending a security mode command to the terminal before sending the configuration information of the default bearer to the terminal.

A device, comprising:

• a sender, configured to send a call access request and capability information of a terminal to a base station, wherein the call access request comprises a type of a call that the terminal requests accessing;
• a receiver, configured to receive a reception acknowledgement from the base station, wherein the reception acknowledgement is a response to the capability information of the terminal;
• a processor, configured to determine whether a security mode command is received from the base station within a duration of a timer, and to access the call based on configuration information of a default bearer that corresponds to the capability information of the terminal on condition that the processor determines that no security mode command is received from the base station within the duration of the timer;
• and
• wherein the timer is configured to start/restart when the receiver receives the reception acknowledgement.