Ip telephone device, ip telephone system and communication method



【課題】 IP電話装置において内線発呼とは別の方式を用いて簡易に通話を行うこと。 【解決手段】 自動的に音声入出力手段を起動して通話可能な状態となるインターホン通話により通話可能な複数のIP電話装置101〜106から構成されるIP電話システムにおいて、送信側のIP電話装置101から通信プロトコルに規定された”INVITEリクエスト”中にインターホン通話を示す情報を設定して受信側のIP電話装置102に送出し、受信側のIP電話装置102でインターホン通話を示す情報が設定された”INVITEリクエスト”を検出すると、音声入出力手段を自動的に起動し、送信側のIP電話装置101との間で通話可能とする。 【選択図】 図6
PROBLEM TO BE SOLVED: To facilitate speech communication using a system different from an extension call in an IP telephone device. SOLUTION: An IP telephone system comprises a plurality of IP telephone devices 101-106 each capable of performing speech communication by an intercom speech communication which automatically activates a voice input output means and is in a speech communication state. In this system, information indicating the intercom speech communication is set in "INVITE request" defined in a communication protocol from a transmitter side IP telephone device 101 of a transmitter side, the information is sent to a receiver side IP telephone device 102 of a receiver side, and when the IP telephone device 102 of the receiver side detects the "INVITE request" in which the information indicating the intercom speech communication is set, the voice input output means is automatically activated to enable speech communication with the IP telephone device 101 of the transmitter side. COPYRIGHT: (C)2005,JPO&NCIPI




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