发明名称 |
Routing methods and systems using ENUM servers internal and external to a service provider network |
摘要 |
A Voice over Internet Protocol (VoIP) call from a first provider to a destination telephone number served by a second provider comprises sending a Session Initiation Protocol (SIP) INVITE message from an originating switch to a first SIP server of the first provider. The first SIP server queries a telephone number mapping (ENUM) server of either the first, second or a third provider, and receives a Uniform Resource Identifier (URI) associated with the destination telephone number. The ENUM server may be internal or external to the first provider. The first provider queries a Domain Name Service (DNS) server based on the URI, and receives an Internet Protocol (IP) address of a second SIP server of the second provider. The first SIP server and the second SIP server are used to set up a bearer path for the VoIP call between the originating switch and a destination switch.
|
申请公布号 |
US2007165613(A1) |
申请公布日期 |
2007.07.19 |
申请号 |
US20060331955 |
申请日期 |
2006.01.13 |
申请人 |
SBC KNOWLEDGE VENTURES, LP |
发明人 |
SOO ARMSTRONG;PORTER BLAIR L.;KU BERNARD S.;ANDERSON PHYLLIS G. |
分类号 |
H04L12/66 |
主分类号 |
H04L12/66 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|