发明申请
US20120327466A1 COMMUNICATION APPARATUS HAVING IPFAX FUNCTION, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM
有权
具有IPFAX功能的通信设备，其控制方法和存储介质
- 专利标题： COMMUNICATION APPARATUS HAVING IPFAX FUNCTION, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM
- 专利标题（中）： 具有IPFAX功能的通信设备，其控制方法和存储介质
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申请号： US13529546申请日： 2012-06-21
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公开(公告)号： US20120327466A1公开(公告)日： 2012-12-27
- 发明人: Mikio Hama
- 申请人： Mikio Hama
- 申请人地址： JP Tokyo
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2011-140673 20110624
- 主分类号： G06K15/00
- IPC分类号： G06K15/00
摘要：
A communication apparatus that accurately measure a time period T0 required for line connection in IPFAX, and optimizes the timing with which a T.38 CNG command is sent out. An AT command that is a dial request is converted into a SIP command that is a session-establishment request, and the SIP command is sent. When there is a provisional response or a session-establishment response to the sent SIP command, a T0 timer which clocks the time period T0 is caused to start counting.
公开/授权文献
- US09578138B2 Sip session management for fax communication 公开/授权日：2017-02-21
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