发明名称 |
Message waiting adjunct device |
摘要 |
A telephone adjunct interface for use with a network-based voice and/or data message storage and delivery service detects and alerts the subscriber to the existence of waiting messages. The interface device utilizes a combination of AC ring detection and outcall polling of the network to determine whether a visual and/or audible notification should be provided to the subscriber. That is, if the subscriber phone is not answered after a selected number of rings, the interface polls the network after a suitable delay to determine if any messages were left. If the subscriber line is busy or on call-forward while a calling party is seeking to leave a message, the network service platform stores the message and waits a selected interval before seeking to alert the subscriber. Advantageously, the device is configured as a small, portable and inexpensive consumer premise unit which connects easily to all standard analog telephone systems that use modular connectors.
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申请公布号 |
US5664008(A) |
申请公布日期 |
1997.09.02 |
申请号 |
US19950570145 |
申请日期 |
1995.12.11 |
申请人 |
AT&T |
发明人 |
BOSSI, BURT JOSEPH;HEWITT, WILLIAM ALAN;HOSKINS, STEPHEN DALE |
分类号 |
H04M3/50;H04M1/00;H04M1/654;H04M1/738;H04M1/82;H04M3/42;H04M3/537;(IPC1-7):H04M1/64 |
主分类号 |
H04M3/50 |
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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