发明名称 Payphone management system
摘要 In one embodiment, a telephone system that includes a number of payphones intended for communication with servers via at least one communication network is disclosed. In one embodiment, the communication network includes a communication interface able to monitor communications between the said payphones and at least a first group of servers.
申请公布号 US6766005(B1) 申请公布日期 2004.07.20
申请号 US20020019841 申请日期 2002.05.21
申请人 发明人
分类号 H04L12/14;H04L12/28;H04M7/12;H04M17/02;H04Q11/04;(IPC1-7):H04M17/00 主分类号 H04L12/14
代理机构 代理人
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