Patent ID: 8160541

Claim:
A communication apparatus as a terminal apparatus for telematic service, which performs data communication with an information center via a wireless communication network wherein the terminal apparatus receives a notice of connection destination information for communicating and connecting with the information center by the data communication, and the terminal apparatus stores the connection destination information received in the notice, the communication apparatus comprising: a connection destination information storing device storing new connection destination information in addition to current connection destination information, which is preliminary stored in the connection destination information storing device, when the terminal apparatus receives the new connection destination information from the information center, wherein the new connection destination information is to be switched with the current connection destination information; a first connection trial device trying communication connection to the information center based on the new connection destination information after the information center switches from the current connection destination information to the new connection destination information; and a second connection trial device trying communication connection to the information center based on the current connection destination information when the first connection trial device tries and fails to perform the communication connection to the information center based on the new connection destination information, wherein the connection destination information storing device maintains the current connection destination information in storage without deleting until the first connection trial device succeeds in performing the communication connection to the information center based on the new connection destination information.