Patent Number: 6,167,125

Title: Communication apparatus and communication method

Abstract: An object of the present invention is to make it possible to utilize information service provided by a carrier without designating a standard protocol as a communication network. A plurality of carriers provide information services to a communication network to which a called terminal unit is connected through a communication line. At the time of termination, a carrier control signal transmitted from the communication network includes a calling line number for identifying an originator, carrier information for identifying a carrier, and carrier service information for identifying a service to be provided. When a plurality of terminals are connected to the called terminal unit as slave units, a function of inter-calling a terminal-number provided by a carrier can be utilized. Carrier information identifying means identifies a carrier on the basis of the carrier information, and carrier-service-information-identifying means controls a terminal selecting circuit on the basis of the carrier service information.

Inventors: Nakaoka; Akira (Higashihiroshima, JP), Takehiro; Hidemi (Higashihiroshima, JP)

Assignee: Sharp Kabushiki Kaisha

International Classification: H04M 3/42 (20060101); H04M 3/487 (20060101); H04M 001/56 ()

Expiration Date: 12/26/2013