发明名称 |
Method and apparatus for analyzing dual tone multi-frequency (DTMF) signals on a private branch exchange (PBX) switch |
摘要 |
A touch-tone receiver (TTR) simulator is disclosed to analyze DTMF signals and facilitate the investigation of call failure problems. The TTR simulator captures DTMF data received by a private branch exchange (PBX) switch and utilizes the instruction set of the TTR being simulated to process the received DTMF signals on the simulated TTR. Diagnostic tools allow step-by-step tracing and recording of the instructions performed by the simulator. The TTR simulator allows the underlying cause of a call failure problem due to DTMF signals to be identified. Results of digit interpretation can be compared to expected results.
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申请公布号 |
US6301355(B1) |
申请公布日期 |
2001.10.09 |
申请号 |
US19980128485 |
申请日期 |
1998.08.04 |
申请人 |
AVAYA TECHNOLOGY CORP. |
发明人 |
SUI CLIFF |
分类号 |
H04M3/24;(IPC1-7):H04M3/42 |
主分类号 |
H04M3/24 |
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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