Patent ID: 7181514

Claim:
An internet facsimile adapter which is connectable to a PSTN network and an IP network and is provided with an analog port connectable with a facsimile apparatus, said adapter comprising: checking means for checking whether an incoming call from the PSTN network is received or not; checking means for checking whether the content of communication by an incoming call from the IP network is for speech communication or it is for facsimile communication; and calling means for executing a calling by (1) sending to the analog port a regular call signal in the PSTN network when the content of communication by the incoming call from the IP network is for the speech communication or when the incoming call from the PSTN network is received and (2) sending to the analog port a call signal in different from the regular call signal in the PSTN network when the content of communication by the incoming call from the IP network is for the facsimile communication.