Invention Grant
US07974389B2 Method of providing 911 service to a private branch exchange 有权
向专用交换机提供911服务的方法

Method of providing 911 service to a private branch exchange
Abstract:
A method of providing 911 service to a private branch exchange, includes grouping a plurality of private telephone numbers into a set. An outgoing telephone line for a 911 call is assigned to the set. A location information for the outgoing telephone line is input into a location database.
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