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US07826599B2 Control of a calling party's telephone service features by a call taker at a public safety answering point 有权
在公共安全应答点，由呼叫者控制主叫方的电话服务功能

Control of a calling party's telephone service features by a call taker at a public safety answering point
Abstract:
A method of administering an emergency call service in a public switched telephone network (PSTN) (60) includes: receiving a call at a switching facility (70) from an end user terminal (EUT) (52) served by the facility (70), the facility (70) providing the EUT (52) access to a telephone service feature; disabling the telephone service feature for the EUT (52) in response to the facility (70) recognizing the received call as an emergency call; routing the emergency call to a public safety answering point (PSAP) (80) serving a geographic region in which the EUT (52) is located; and, providing a call taker (84) at the PSAP (80) control over the telephone service feature, such that the call taker (84) can selectively enable the telephone service feature.
Abstract(Chinese):

一种在公共交换电话网（PSTN）（60）中管理紧急呼叫业务的方法包括：从设备（70）所服务的终端用户终端（EUT）（52）接收到交换设备（70）的呼叫， ，提供EUT（52）访问电话服务特征的设施（70） 响应于将接收到的呼叫识别为紧急呼叫的设施（70），禁止EUT（52）的电话服务功能; 将紧急呼叫路由到服务于EUT（52）所在的地理区域的公共安全应答点（PSAP）（80）; 并且在PSAP（80）上通过电话服务特征提供呼叫接收者（84），使得呼叫接收者（84）可以选择性地启用电话服务特征。

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