Communication system

Abstract

A communication system includes: a subscriber information storage device configured to store subscriber information; a registration unit configured to register, in addition to first subscriber information, second subscriber information in the subscriber information storage device, as sub-registrant subscriber information of a first terminal unit, the first subscriber information being the subscriber information associated with a first terminal unit, and the second subscriber information being the subscriber information associated with a second terminal unit; and a reception processor configured to acquire the sub-registrant subscriber information associated with the first subscriber information by referring to the subscriber information storage device, when transmission is made to the first terminal unit, and subsequently to perform processing of reception at the second terminal unit with use of the sub-registrant subscriber information.

Dependencies are inferred from the claim text.