Congestion handling in a packet communication system
First Claim
1. A packet communication system, comprising:
- a packet network;
an end communication device coupled to the packet network and configured to receive a call request message for a call, and transmit the call request message over the packet network, the call request message having a header that includes priority information for the call; and
a call processing system coupled to the packet network and configured to receive the call request message, process the priority information in the header of the call request message to determine if the call request message is for a high priority call, and transmit a response message over the packet network indicating a state of congestion in the call processing system responsive to a determination that the call request message is not for a high priority call;
the end communication device is configured to receive the response message and perform call blocking on call requests received by the end communication device to be handled by the call processing system responsive to the response message;
wherein the call processing system is further configured to transmit a message indicating that the call processing system is no longer in the state of congestion; and
wherein the end communication device is further configured to stop performing call blocking responsive to the message indicating that the call processing system is no longer in the state of congestion.
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Accused Products
Abstract
A packet communication system is disclosed that includes an end communication device, a call processing system, and a packet network. To setup up a call from an end user, the end communication device transmits a call request message to the call processing system. The call request message has a header that includes priority information for the call. The call processing system processes the priority information in the header of the call request message to determine if the call request message is for a high priority call. If the call request message is not for a high priority call and the call processing system is in a state of congestion, then the call processing system transmits a response message indicating the state of congestion. Responsive to receiving the response message, the end communication device performs call blocking and provides call treatment to the end user.
36 Citations
26 Claims
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1. A packet communication system, comprising:
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a packet network; an end communication device coupled to the packet network and configured to receive a call request message for a call, and transmit the call request message over the packet network, the call request message having a header that includes priority information for the call; and a call processing system coupled to the packet network and configured to receive the call request message, process the priority information in the header of the call request message to determine if the call request message is for a high priority call, and transmit a response message over the packet network indicating a state of congestion in the call processing system responsive to a determination that the call request message is not for a high priority call; the end communication device is configured to receive the response message and perform call blocking on call requests received by the end communication device to be handled by the call processing system responsive to the response message; wherein the call processing system is further configured to transmit a message indicating that the call processing system is no longer in the state of congestion; and wherein the end communication device is further configured to stop performing call blocking responsive to the message indicating that the call processing system is no longer in the state of congestion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of providing congestion handling in a packet communication network, wherein the packet communication network comprises an end communication device, a packet network, and a call processing system, the method comprising:
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in the end communication device, receiving a call request message for a call, and transmitting the call request message over the packet network, the call request message having a header that includes priority information for the call; in the call processing system, receiving the call request message, processing the priority information in the header of the call request message to determine if the call request message is for a high priority call, and transmitting a response message over the packet network indicating a state of congestion in the call processing system responsive to a determination that the call request message is not for a high priority call; in the end communication device, receiving the response message, and performing call blocking on call requests received by the end communication device to be handled by the call processing system responsive to the response message; in the call processing system, transmitting a message indicating that the call processing system is no longer in the state of congestion; and in the end communication device, stopping call blocking responsive to the message indicating that the call processing system is no longer in the state of congestion. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification