Patent ID: 8072979

Claim:
A communication system, wherein: a wireless base station B 1 is connected to a network node unit N 1 by a logical terminal LP 1 via a communication line L 1 , and a wireless base station B 2 is connected to a network node unit N 2 by a logical terminal LP 2 via a communication line L 2 , a server S 1 receives a telephone number or a host name of a terminal M 2 and a connection request from a terminal M 1 via said wireless base station B 1 , and based on said telephone number or said host name of said terminal M 2 and said connection request, said network node unit N 1 sets a communication record R 1 , said network node unit N 2 sets a communication record R 2 and then a communication path P 12 in which an internal packet is transferred, is set between said logical terminals LP 1 and LP 2 , voice or data is sent to said wireless base station B 1 from said terminal M 1 , and an external IP packet including said voice or data is sent from said wireless base station B 1 , said external IP packet is inputted to said network node unit N 1 from said logical terminal LP 1 , said network node unit N 1 converts, based on said communication record R 1 , said external IP packet into said internal packet, said internal packet is transferred in said communication path P 12 , said external IP packet is restored from said internal packet at said network node unit N 2 and is sent to said wireless base station B 2 from said logical terminal LP 2 , and said voice or data is sent to said terminal M 2 from said wireless base station B 2 , and based on a communication release request which is sent from said terminal M 1 or M 2 , said network node units N 1 and N 2 reset said communication records R 1 and R 2 and then said communication path P 12 is reset.