Ntt Docomo, Inc.

Chikako Tsukada

Motoshi Tamura

Masami Yabusaki

There are provided a server apparatus capable of transmitting any message in a flexible manner at various timings of communication service states, and a message transmission method thereof. When a communication trigger detectorof an IMSdetects a trigger point, a determination portiondetermines a massage to be transmitted based upon at least one of a type of the communication service state, a transmission destination of the message, presence information, and an instruction input. A message transmittergive an instruction to an information storage deviceto transmit the message to be transmitted that has been determined, and the information storage devicetransmits the message to the transmission destination.

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Shinagawa-ku, Japan

Chikako Tsukada