Multiplex communications – Diagnostic testing – Path check
Reexamination Certificate
1998-05-05
2001-07-31
Hsu, Alpus H. (Department: 2662)
Multiplex communications
Diagnostic testing
Path check
C370S352000, C370S353000, C370S355000, C370S357000, C379S221050
Reexamination Certificate
active
06269084
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an improvement applicable to a method for managing connection/disconnection of a telecommunication line and to a management system employable for connection/disconnection of a telecommunication line. More specifically, this invention relates to an improvement developed for enabling real time monitoring of a telecommunication line.
BACKGROUND OF THE INVENTION
User Datagram Protocol set forth in RFC 768 is usually employed for an internet protocol network (IP network). In the User Datagram Protocol, however, no answer-back is available. In other words, a receiver does not return a confirmation signal to the sender.
In this sense, this system can have various drawbacks. Namely, none of the normal functions can be expected for telecommunication, when a telecommunication system is in disorder and/or when the telecommunication traffic is too busy and demand quantity is in excess of the system capacity. Under protocol which is not assisted by an answer-back system, neither a sender nor a receiver can identify whether or not the current telecommunication is proceeding, as is designed. Therefore, this system can not be employed for a type of telecommunication conducted on real time basis requiring a high grade of reliability. In this sense, this system can not be employed for voice call telecommunication or the like. Under such situations in which the system is in disorder or the traffic is too busy, normal operation can not be guaranteed for a system working based on the information sent by such a telecommunication system. If a request for connection is limitlessly accepted under a circumstance in which the telecommunication traffic is too busy, this enhances the too busy situation and delays recovery from the too busy situation. Further, since the line is kept connected until an abnormal situation is identified by either the sender or the receiver, even after the abnormal situation happens, a delay in recovery of the too busy situation causes a sizable amount of execution of useless telecommunication, wasting a sizable amount of money and materials and producing a sizable quantity of undelivered correspondence, resultantly devastating the reliability of telecommunication. In the foregoing sense, a telecommunication system in which the current position of telecommunication is not monitored on the real time basis, is accompanied by a considerable magnitude of drawbacks which include various parameters to devastate the reliability of the telecommunication system.
OBJECTS AND SUMMARY OF THE INVENTION
Accordingly, the object of this invention is to provide a telecommunication system in which a real time monitoring system is introduced therein.
To achieve the foregoing object, a method for managing connection/disconnection of a telecommunication line in accordance with a first embodiment of this invention comprises:
a step for sending a response monitoring packet via a network from a first telecommunication equipment toward a second telecommunication equipment with which telecommunication is exchanged,
a step for receiving a response packet from the second telecommunication equipment,
a step for calculating a response time defined as a time length from the time at which the response monitoring packet is sent and the time at which the response packet is received,
a step for comparing the response time and the threshold value of a response time to be determined corresponding to a specific communication class, and
a step for disconnecting the telecommunication line connecting the first telecommunication equipment and the second telecommunication equipment, in response to an excess of the response time over the threshold value of a response time defined corresponding to the specific communication class.
To achieve the foregoing object, a management system employable for connection/disconnection of a telecommunication line in accordance with a first embodiment of this invention comprises:
a packet assembly/disassembly, packet sending and packet receiving unit for sending a response monitoring packet via a network from a first telecommunication equipment toward a second telecommunication equipment with which telecommunication is exchanged and for receiving a response packet from the second telecommunication equipment,
a monitoring timer for monitoring a response time defined as a time length from the time at which the response monitoring packet is sent and the time at which the response packed is received,
a telecommunication control unit for comparing the response time and the threshold value of a response time to be determined corresponding to a specific communication class and for disconnecting the telecommunication line connecting the first telecommunication equipment and the second telecommunication equipment, in response to an excess of the response time over the threshold value of a response time defined corresponding to the specific communication class.
To achieve the foregoing object, a method for managing connection/disconnection of a telecommunication line in accordance with a second embodiment of this invention comprises:
a step for sending a call connect request requesting connection of a line connecting a first telecommunication equipment and a second telecommunication equipment, via a network, from the first telecommunication equipment toward the second telecommunication equipment,
a step for receiving a message confirming acceptance of the call connect request requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, from the second telecommunication equipment,
a step for calculating a response time defined as a time length from the time at which the message requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment and the time at which the message confirming acceptance of the message requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, from the second telecommunication equipment,
a step for comparing the response time and the threshold value of a response time to be determined corresponding to a specific communication class, and
a step for forbearing connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, in response to an excess of the response time over the threshold value of a response time defined corresponding to the specific communication class.
To achieve the foregoing object, a management system employable for connection/disconnection of a telecommunication line in accordance with a second embodiment of this invention comprises:
a means for sending a call connect request for requesting connection of a line connecting a first telecommunication equipment and a second telecommunication equipment, via a network, from the first telecommunication equipment toward the second telecommunication equipment and for receiving a message confirming acceptance of the call connect request for requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, from the second telecommunication equipment,
a monitoring timer for monitoring a response time defined as a time length from the time at which the message requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment and the time at which the message confirming acceptance of the call connect request for requesting connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, and
a telecommunication control unit for comparing the response time and the threshold value of a response time to be determined corresponding to a specific communication class and for forbearing connection of a line connecting the first telecommunication equipment and the second telecommunication equipment, in response to an excess of the response time over the threshold value of a resp
Burdett James R.
Frank Robert J.
Hsu Alpus H.
Logsdon Joe
OKI Electric Industry Co., Ltd.
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