发明名称 |
PRIVATE TELEPHONE MANAGMENT SYSTEM AND METHOD |
摘要 |
An apparatus for adding functionality to a private telephone system, comprising: a processing unit monitoring a telephone line and operable to perform said add ed functionality; a talk battery; and a switch having an input for a telephone, and an output selectable between an input of said private telephone system and said talk battery, said switch being controlled by said processing unit.
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申请公布号 |
CA2369415(A1) |
申请公布日期 |
2002.08.09 |
申请号 |
CA20022369415 |
申请日期 |
2002.01.25 |
申请人 |
SASKTEL |
发明人 |
SIMPSON, AL;ZOEHNER, PAUL;JOHNS, DENNIS ELMER;REED, GORD |
分类号 |
H04M1/50;H04M3/42;(IPC1-7):H04Q3/10 |
主分类号 |
H04M1/50 |
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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