发明名称 |
System and method for maintaining a communication session over gatekeeper failure |
摘要 |
The present invention provides a method for maintaining a communication session between telephony devices, which includes establishing a first TCP/IP signaling communication link between a first telephony device and a proxy. The first TCP/IP signaling communication link is operable to communicate first keep alive signals between the proxy and the first telephony device. A second TCP/IP signaling communication link is established between a primary gatekeeper and the proxy. The second TCP/IP signaling communication link is operable to communicate second keep alive signals between the proxy and the primary gatekeeper. The first and second TCP/IP signaling communication links are terminated at the proxy. Therefore, a communication session between the first telephony device and a second telephony device may be maintained even if the second keep alive signals are interrupted.
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申请公布号 |
US6973027(B1) |
申请公布日期 |
2005.12.06 |
申请号 |
US20010932544 |
申请日期 |
2001.08.17 |
申请人 |
CISCO TECHNOLOGY, INC. |
发明人 |
SHAFFER SHMUEL;SARKAR SHANTANU |
分类号 |
H04J1/16;H04L29/06;H04L29/14;H04M7/00;(IPC1-7):H04J1/16 |
主分类号 |
H04J1/16 |
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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