Invention Grant
- Patent Title: Route re-query scheme in communication networks
- Patent Title (中): 通信网络中的路由重新查询方案
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Application No.: US10393658Application Date: 2003-03-20
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Publication No.: US07768996B1Publication Date: 2010-08-03
- Inventor: Henry Louis Fourie , Paul Edwin Jones , Cheng Kun Wang , Madhu Gindi
- Applicant: Henry Louis Fourie , Paul Edwin Jones , Cheng Kun Wang , Madhu Gindi
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Marger Johnson & McCollom, P.C.
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04M7/00

Abstract:
A method for re-querying for routing information is disclosed. The method transmits an initial admission query to a gatekeeper or a request for routing information and receives an admission confirmation or routing information response with a destination address. The method then tries to establish a connection with the destination address. Upon reception of a call failure message including a failure cause, the method, optionally, increments a counter and transmits a re-query to the gatekeeper or other routing entity, and the re-query includes the failure cause and, optionally, a value of the query counter.
Information query