Method and Apparatus for Supporting Call Control of Circuit Domain Telephone and VoIP

An apparatus for supporting call control of circuit domain telephone and Voice over IP (VoIP), the apparatus comprising:

• an off/on-hook detection module of bottom layer, configured to send a detected off-hook event;
• a circuit domain telephone call control module, configured to receive an off-hook event from a call flow control module and all of events in a present call, and process a call event of the circuit domain telephone;
• a VoIP call control module, configured to receive an off-hook event from the call flow control module and all of events in a present call, and process a call event of the VoIP;
• the call flow control module, configured to receive an off-hook event from the off/on-hook detection module of bottom layer, save the received off-hook event and judge whether a user makes a circuit domain telephone call or a VoIP call according to a number dialed by the user;
• to send the received off-hook event to the VoIP call control module when making the VoIP call, and send all of the events in the present call to the VoIP call control module for processing;
• to send the received off-hook event to the circuit domain telephone call control module when making the circuit domain telephone call, and send all of the events in the present call to the circuit domain telephone call control module for processing.