Patent ID: 8792621
Filing Date: 2014-07-29
Classification: H04M

Abstract:
1. A method comprising: connecting a call between a device of a first party and a device of a second party, wherein the second party is a person authorized to manually mark the call non-preemptable for at least one of public safety purposes or emergency call purposes; responsive to receiving a request to designate the call as a non-preemptable call, marking the call, while the call is in progress, with a non-preemptable call status by sending a signal to a main switching element in a telecommunications system requesting non-preemptable call status for the call, wherein: non-preemptable call status acts to prevent the call from early termination by a high priority third party attempting to gain access to the network resources by establishing another call on the network; and non-preemptable call status acts to prevent reallocation, to the high priority third party, of network resources being utilized by the call; propagating the non-preemptable call status to nodes and switching points in the telecommunications system; and upon termination of the call by one of the first party or the second party, clearing the non-preemptable call status from the nodes and switching points in the telecommunications system.