发明名称 |
Selective call waiting service |
摘要 |
A communications system is designed to present a number of options to a caller who is attempting to reach a call-waiting subscriber already busy on a first call. The options are presented to the caller via an announcement that offers the caller the alternative of either sending immediately a conventional call-waiting alert signal to the subscriber, or leaving a message that is automatically delivered to the subscriber immediately after the subscriber terminates the first call.
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申请公布号 |
US7848506(B1) |
申请公布日期 |
2010.12.07 |
申请号 |
US20060487280 |
申请日期 |
2006.07.14 |
申请人 |
AT&T INTELLECTUAL PROPERTY II, L.P. |
发明人 |
INFOSINO WILLIAM J. |
分类号 |
H04M3/42;H04M3/428;H04M3/436 |
主分类号 |
H04M3/42 |
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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