发明名称 |
TELEPHONE EXCHANGE METHOD AND SYSTEM FOR IP TELEPHONE TERMINAL |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a telephone exchange method and a telephone exchange system which can reduce speech delay or deterioration in speech quality. <P>SOLUTION: The telephone exchange method between telephone terminals makes a call connection between the telephone terminals through a telephone network at a call connection request and sets a channel between the telephone terminals through the telephone network. Then while the channel is disconnected, a channel is set between the telephone terminals through an IP network and speech signals are sent and received through the channel of the IP network. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
申请公布号 |
JP2005318178(A) |
申请公布日期 |
2005.11.10 |
申请号 |
JP20040132678 |
申请日期 |
2004.04.28 |
申请人 |
OKI ELECTRIC IND CO LTD;OKI TELECOMMUNICATION SYSTEMS CO LTD |
发明人 |
ISHIKAWA KIYOSHI;NISHIMURA NOBUHIRO |
分类号 |
H04L12/70;H04L12/701;H04L12/707;H04M3/00;H04M11/00;H04Q3/58;(IPC1-7):H04M3/00;H04L12/56 |
主分类号 |
H04L12/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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