发明名称 |
Methods and apparatus for providing toll-free telephone services |
摘要 |
Methods and apparatus for providing toll-free telephone services are disclosed. A disclosed system comprises a telephone network to route a telephone call placed to a toll-free telephone number to one of a Voice over Internet Protocol (VoIP) endpoint, a Plain Old Telephone Service (POTS) endpoint or a dedicated trunk endpoint based on a state of at least one variable.
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申请公布号 |
US2007064685(A1) |
申请公布日期 |
2007.03.22 |
申请号 |
US20050227396 |
申请日期 |
2005.09.15 |
申请人 |
CROCKETT SUSANNE M;LASKEN ROBERT B;LIN RICK Y |
发明人 |
CROCKETT SUSANNE M.;LASKEN ROBERT B.;LIN RICK Y. |
分类号 |
H04L12/66 |
主分类号 |
H04L12/66 |
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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