Method for playing multimedia customized ringing signal and customized alerting tone, and application server

A communication method, comprising:

• receiving a first initial invite request from an originating terminal;
• sending a second initial invite request to a terminating terminal based on the first initial invite request, wherein the first initial invite request and the second initial invite request are used to initiate a session;
• receiving a provisional response from the terminating terminal in response to the second initial invite request;
• and
• sending, from an application server, an update message to the terminating terminal, wherein the update message comprises SDP information of customized ring signal media and is to modify the session, and wherein the customized ring signal media is to be played in the modified session.

A communication apparatus, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the communication apparatus to:
• receive a first initial invite request from an originating terminal;
• send a second initial invite request to a terminating terminal based on the first initial invite request, wherein the first initial invite request and the second initial invite request are used to initiate a session;
• receive a provisional response from the terminating terminal in response to the second initial invite request;
• and
• send an update message to the terminating terminal, wherein the update message comprises SDP information of customized ring signal media and is to modify the session, and wherein the customized ring signal media is to be played in the modified session.

A communication apparatus, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the communication apparatus to:
• receive an initial invite request from an originating terminal, wherein the initial invite request is used to initiate a session, and wherein the initial invite request comprises session description protocol (SDP) information of the originating terminal;
• send a provisional response to an application server in response to the initial invite request;
• receive an update message from the application server, wherein the update message comprises SDP information of customized ring signal media and is to modify the session;
• and
• after receiving the update message, play the customized ring signal media in the modified session
• wherein the communication apparatus is a terminating terminal or a component in the terminating terminal.

A system, comprising:

• a call session control function and an application server,
• wherein the call session control function comprises at least one first processor coupled to at least one memory storing instructions and configured to execute the instructions to cause the call session control function to:
• receive a first initial invite request from an originating terminal;
• send based on the first initial invite request, a third initial invite request to an application server;
• wherein the application server comprises at least one second processor coupled to at least one memory storing instructions and configured to execute the instructions to cause the application server to:
• send, based on the third initial invite request, a second initial invite request to a terminating terminal, wherein the first initial invite request, the second initial invite request, and the third initial invite request are used to initiate a session;
• receive a provisional response from the terminating terminal in response to the second initial invite request;
• send an update message to the terminating terminal, wherein the update message comprises resource information of customized ring signal media and is to modify the session, and wherein the customized ring signal media is to be played in the modified session.