| 摘要 |
A method for implementing a remote receiver connected to a telephony network can include a call authorizer that can access remote receiver specific information, wherein the remote receiver specific information can include an authorization requirement. The call authorizer can receive a digitally encoded signal specifying an authorization code. Prior to a telephony connection being established between the remote receiver and an originating device, the call authorizer can determine whether the authorization code satisfies the authorization requirement. Responsive to this determination, the call authorizer can send a ringing signal via the telephone line to the remote receiver. The remote receiver can power an actuator within the remote receiver with a voltage from the ringing signal. The actuator can activate a device controlled by the remote receiver.
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