Method of detecting circular routing in No. 7 signaling
AssigneeLG Electronics Inc.
InventorJung Kyun Lim
Life of this patent
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Abstract
A method of detecting circular routing in a No. 7 signaling network is provided which detects circular routing that occurs when operating the signaling network, thereby preventing congestion of links by circular routing and finding out any reasons for the link congestion. The method detects a circular routing that occurs in three or more signaling transfer points, by transmitting a message transfer part routing verification test (MRVT) message through the signal route of the highest priority among the signal routes in an available state which go to a specific destination point code (DPC), only when a link is in an unavailable state, thereby preventing congestion of links by circular routing and finding out any reasons for the link congestion.
Claims20
A method for detecting a circular routing in a No. 7 signaling network which is connected to any of a number of destination points and a number of signaling transfer points at a close or long distance, comprising:
- determining an unavailable state of a link directly connected to a destination point at any of the signaling transfer points;
- selecting available signal routes having the destination point as a destination, if the link directly connected to the destination point is unavailable, as a result of said determination;
- transmitting a message transfer part routing verification test (MRVT) message via a specific signal route among the available signal routes according to an order of priority;
- and
- detecting a corresponding signal route as in a normal state or in a circular routing state according to a response message, after receiving the response message from the signaling transfer point that received the MRVT message.
A method for detecting circular routing in a No. 7 signaling network, comprising:
- determining an unavailable state of a link direcdy connected to a destination point;
- selecting available signal routes having the destination point as a destination;
- transmitting a test message via one of the available signal routes determined according to an order of priority;
- and
- detecting whether the signal route is in a normal state or in a circular routing state according to whether a response message is a first type response message or a second type response message.
Dependencies are inferred from the claim text.