Patent ID: 6967928

Claim:
An Internet telephone system having an Internet network for transferring voice information in the form of a voice packet which is transmitted from a voice communications terminal incorporating a voice communications function, and transferring data in the form of a data packet which are transmitted from a data communications terminal incorporating a data communications function, said system comprising: a first detecting unit for detecting a transition of a call-out state of said voice communications terminal; a packet assembling unit for assembling, when said first detecting unit detects the transition of the call-out state of said voice communications terminal, a control packet containing indication information for changing, to a predetermined limit value, a maximum length of each of the data packets transferred via said Internet network; and a first routing unit for routing, when receiving the control packet containing the indication information, each of the data packets and the voice packet to said Internet network while restricting the maximum length of the data packet to the predetermined limit value.