发明名称 Wireless multi-site networking using signaling and voice-over-IP
摘要 The invention relates to methods and apparatus for wireless multi-site networking using signaling and voice over Internet protocol. The apparatus includes a wireless portable terminal, a controller for controlling communications equipment, wireless base stations, a computer network, and signaling devices. The wireless portable terminal is registered to a home controller when within a home coverage area, and the wireless portable terminal is registered with a remote controller when within a remote coverage area, thereby allowing the wireless portable terminal to roam from the home location to the remote location using a home wireless base station and remote wireless base stations, respectively, with the ability to make and receive calls via its home directory number.
申请公布号 US6560223(B1) 申请公布日期 2003.05.06
申请号 US19980220232 申请日期 1998.12.23
申请人 NORTEL NETWORKS LIMITED 发明人 EGAN BRIAN PATRICK;MACAULAY ROBERT;MASTRONARDI JAMES
分类号 H04M7/00;H04W76/04;H04W92/02;H04W92/24;(IPC1-7):H04L12/66 主分类号 H04M7/00
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