发明名称 |
Apparatus and method for call progress timing measurement in IP telephony |
摘要 |
A method and apparatus for measuring call setup time is presented. A first device in a network sends a signal to a second device. The first device monitors for a response from the second device and adjusts an answer tone setting for the second device based on the response. After which, the first device calculates an elapsed time between sending the signal and a receipt of the response.
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申请公布号 |
US6411679(B1) |
申请公布日期 |
2002.06.25 |
申请号 |
US19990398185 |
申请日期 |
1999.09.17 |
申请人 |
VERIZON LABORATORIES INC. |
发明人 |
KHASNABISH BHUMIP |
分类号 |
H04M1/24;H04M3/32;H04M7/00;(IPC1-7):H04M1/24;H04M3/08;H04M3/22 |
主分类号 |
H04M1/24 |
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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