What is the function of the missing message reminder of Tianyi Communication Assistant?

The call assistant's call miss reminder means that the other party has opened the call miss reminder service, which means that the dialed number may be turned off or out of service.

after the missed call reminder service is enabled, when the mobile phone is turned off or unavailable, if someone makes a call, when the mobile phone is turned on, they will receive a text message informing them that there is a missed call.

missed call reminder service function: when the calling party dials the called party, if the called party has set the call transfer to the missed call reminder service platform, the system will inform the calling party that the missed call reminder service has been started, and will send your phone number to the other party's mobile phone.