发明名称 |
System and method of providing group dispatch calling between users in distinct geographical areas |
摘要 |
A dispatch communications system is disclosed that facilitates group dispatch communications respectively between subscriber units residing within a first geographical area, subscriber units residing within a second geographical area, and subscriber units residing respectively within the first and second geographical areas. The dispatch communications system includes a first intra-area dispatch communications network to facilitate group dispatch calling between subscriber units residing within a first geographical area; a second intra-area dispatch communications network to facilitate group dispatch calling between subscriber units residing within a second geographical area different than the first geographical area; and an inter-area dispatch communications network to facilitate group dispatch calling between subscriber units residing respectively within the first and second geographical areas. A call processing unit controls both inter-area and intra-area group dispatch calls for the dispatch communications system.
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申请公布号 |
US7206595(B2) |
申请公布日期 |
2007.04.17 |
申请号 |
US20040889092 |
申请日期 |
2004.07.12 |
申请人 |
NEXTEL COMMUNICATIONS, INC. |
发明人 |
ZUFALL DAVID |
分类号 |
H04L12/28;H04M3/42;H04W84/08 |
主分类号 |
H04L12/28 |
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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