发明名称 SIGNAL CONTROL SYSTEM IN IP TELEPHONE SYSTEM
摘要 PROBLEM TO BE SOLVED: To specify the concrete form of control signals for sending PB signals generated by a mobile phone terminal during communication to a telephone main unit connected through a LAN by outbound signals. SOLUTION: A WLAN-AP 3 is provided between the LAN and the mobile phone terminal through a radio telephone network. When voice packets received from the radio telephone network during the communication are fetched and decoded in a voice packet decoding part 15, in the case where an IB-DTMF detection part 16 detects inbound DTMF signals sent out by the PB signals as the control signals, an OB-DTMF generation part 17 keeps DTMF signals obtained from the inbound DTMF signals as they are, and sends out outbound DTMF signals generated by substituting a destination address to the one for the telephone main unit, to the LAN as the outbound signals. COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2009004974(A) 申请公布日期 2009.01.08
申请号 JP20070162538 申请日期 2007.06.20
申请人 NEC INFRONTIA CORP 发明人 MOTOMIYA MASASHI
分类号 H04M3/00 主分类号 H04M3/00
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