Synchronization method, apparatus, and system for call supplementary service configuration

A terminal comprising:

• a memory;
• and
• at least one processor communicatively coupled to the memory, wherein the at least one processor is configured to:
• receive a supplementary service configuration instruction,
• obtain a configuration parameter corresponding to the supplementary service configuration instruction,
• upload the configuration parameter to a mobile switching center using a circuit switched domain for enabling the mobile switching center to store the configuration parameter as a supplementary call service configuration of the circuit switched domain for a home location register,
• receive configuration feedback information,
• determine, according to the configuration feedback information, whether a configuration synchronization succeeds, and
• store the configuration parameter as an on-terminal supplementary call service configuration when the configuration synchronization succeeds, wherein the on-terminal supplementary call service configuration is used as supplementary call service configuration of 4G network.

A system for synchronizing a for supplementary call service configuration, the system comprising:

• a home location register configured to send configuration feedback information to a terminal using a mobile switching center;
• and
• wherein the terminal is configured to:
• receive a supplementary service configuration instruction,
• obtain a configuration parameter corresponding to the supplementary service configuration instruction,
• upload the configuration parameter to the mobile switching center using a circuit switched domain for enabling the mobile switching center to store the configuration parameter as a supplementary call service configuration of the circuit switched domain for the home location register,
• determine, according to the configuration feedback information, whether a configuration synchronization succeeds, and
• store the configuration parameter as an on-terminal supplementary call service configuration when the configuration synchronization succeeds, wherein the on-terminal supplementary call service configuration is used as supplementary call service configuration of 4G network.