发明名称 |
Integrated communication system |
摘要 |
<p>A telephone or two-way digital paging communication system provides an alternative partial communication format in which an acknowledgement signal is transmitted from a telephone device in response to a received voice or data signal. The communication system is switchable between different types of communication formats including full two-way voice or data service, partial two-way service and one-way pager service. The communication system may be implemented in a cellular network in which a portable cellular telephone is adapted to transmit signals at different transmission rates so as to increase its operable range.</p> |
申请公布号 |
EP1139676(A1) |
申请公布日期 |
2001.10.04 |
申请号 |
EP20010112808 |
申请日期 |
1995.08.02 |
申请人 |
AT&T CORP. |
发明人 |
DRIESSEN, PETER FRANK;GREENSTEIN, LAWRENCE JOEL;SABNANI, KRISHAN KUMAR |
分类号 |
H04M3/42;H04B7/26;H04W4/12;H04W76/04;H04W88/06;(IPC1-7):H04Q7/22 |
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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