Importance

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Abstract

An Address Presentation Restricted Indicator within an Initial Address Message (IAM) call setup signal includes a value indicating that a requested call connection is an emergency call. In response, even if the terminating subscriber has an Anonymous Call Rejection (ACR) subscriber feature activated, the terminating end office overrides the activated feature and effectuates a call connection towards the terminating subscriber without displaying the directory number associated with the originating subscriber. A memory register associated with a CLASS Automatic Recall (CAR) subscriber feature is further not updated with the incoming directory number to preclude a call back to the originating subscriber from the terminating subscriber.

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First Claim