Communication apparatus, method of controlling the same, and storage medium

A communication apparatus comprising:

• an IP packet generation/analysis unit configured to generate and analyze an IP packet;
• an interface unit configured to receive an incoming audio call from the IP packet generation/analysis unit;
• a telephone control unit configured to control a telephone by connecting the telephone;
• a first FAX communication control unit and a second FAX communication control unit which are configured to control FAX communication using a deemed voice;
• a selection unit configured to switch a signal from the interface unit to the telephone control unit and the FAX communication control unit;
• and
• a control unit configured to;
• (i) when the interface unit receives an incoming audio call during voice communication of a first session using the telephone, control the telephone control unit to superimpose an incoming call display tone on the voice communication using the telephone and, in response to a hooking operation of the telephone, control the selection unit to connect the incoming audio call to the telephone control unit and connect the voice communication of the first session to the first FAX communication control unit to send a holding tone, and
• (ii) when the incoming audio call includes a CNG signal, control the selection unit to connect the incoming audio call to the second FAX communication control unit to start FAX communication and connect the voice communication of the first session to the telephone control unit to restart the voice communication using the telephone.

A method of controlling an image communication apparatus which is capable of performing voice communication via an IP network and performing FAX communication using a deemed voice, and includes a telephone control unit configured to control a telephone by connecting the telephone, a FAX communication control unit configured to control FAX communication using a deemed voice, and a selection unit configured to switch a signal from the IP network to the telephone control unit and the FAX communication control unit, the method comprising:

• determining, at the time of reception of an incoming call, whether an incoming voice communication call or digital data has been received;
• if it is determined in the determining that the incoming voice communication call has been received and there is an already connected voice communication session, causing the telephone control unit to superimpose a tone of a notification of the incoming call during voice communication on a voice during voice communication;
• and
• when the telephone instructs to switch to the incoming call, establishing a new session for the incoming call, controlling the selection unit to connect the already connected voice communication session to the FAX communication control unit, and controlling the FAX communication unit to send a holding tone.

A computer-readable storage medium storing a program for causing a computer to function as a communication apparatus capable of performing voice communication via an IP network, and performing FAX communication using a deemed voice, comprising:

• a telephone control unit configured to connect a telephone and control the telephone;
• a FAX communication control unit configured to control FAX communication using a deemed voice;
• a selection unit configured to switch a signal from the IP network to the telephone control unit and the FAX communication control unit;
• a determination unit configured to determine, at the time of reception of an incoming call, whether an incoming voice communication call or digital data has been received;
• and
• a control unit configured to, if the determination unit determines that the incoming voice communication call has been received and there is an already connected voice communication session, control the telephone control unit to superimpose a tone of a notification of the incoming call during voice communication on a voice during voice communication and to establish a new session for the incoming call when the telephone instructs to switch to the incoming call, control the selection unit to connect the already connected voice communication session to the FAX communication control unit, and control the FAX communication control unit to send a holding tone.