An Internet number is displayed after I end a 4G HD voice conference call

During the setup of a VoLTE call conference, both the calling party and the conference participants are connected to the conference center. Therefore, after the calling party hangs up, the chair site does not hang up to terminate the connection with the conference center. When the call is terminated, the network delivers the IP address (not the mobile number) of the peer number to the mobile phone. As a result, the Internet number is displayed on the page.