US5636206A
Expired / Lapsed
US
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System for achieving alarm masking processing
Assignee: Fujitsu Ltd
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Filing: 1995-05-19
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Granted: 1997-06-03
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Expires: 2015-05-19
Abstract
Abstract An alarm masking system is provided which is capable of implementing alarm priority processing or alarm inhibit processing in ATM transmission equipment. In ATM transmission equipment, a received virtual path or virtual channel is switched by means of a switching unit and then sent to an interface unit. In doing this, if a higher priority alarm is detected or received at a reception side interface unit, an intra-office tag is added to the alarm cell and then it is output, so that by detecting this intra-office tag it is possible to inhibit generation of lower priority alarms in response to the higher order alarm.
Inventors
- 👤 Shigeo Amemiya
- 👤 Yuichi Matsuda
- 👤 Takao Ogura
- 👤 Yasuki Fujii
- 👤 Koji Tezuka
- 👤 Hiromi Ueda
- 👤 Hitoshi Uematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/14
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
114 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when the reception side interface unit detects or receives an alarm having a higher priority level, to add an intra-office tag to an alarm cell and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm having a lower priority level which is generated in response to said alarm having a higher priority level.
Claim 2
Independent Claim
114 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when the reception side interface unit detects or receives an alarm having a higher priority level, to add an intra-office tag to an alarm cell and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm having a lower priority level which is generated in response to said alarm having a higher priority level.
Claim 3
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 1, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 4
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 1, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 5
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 1, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
Claim 6
Independent Claim
115 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when the reception side interface unit detects or receives an alarm having a higher priority level, to add an intra-office tag to an monitor cell and sent out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of a monitor alarm having a lower priority level which is generated in response to said alarm having a higher priority level.
Claim 7
Independent Claim
115 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when the reception side interface unit detects or receives an alarm having a higher priority level, to add an intra-office tag to an monitor cell and sent out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of a monitor alarm having a lower priority level which is generated in response to said alarm having a higher priority level.
Claim 8
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 5, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 9
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 5, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 10
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 5, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
Claim 11
Independent Claim
106 words
A system for achieving an alarm masking processing cooperating with an interface panel which includes a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when a failure occurs in said interface panel, to add an intra-office tag to an alarm cell at said reception side interface and sent out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm which is generated in response to said failure.
Claim 12
Independent Claim
106 words
A system for achieving an alarm masking processing cooperating with an interface panel which includes a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when a failure occurs in said interface panel, to add an intra-office tag to an alarm cell at said reception side interface and sent out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm which is generated in response to said failure.
Claim 13
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 9, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 14
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 9, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 15
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 9, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
Claim 16
Independent Claim
116 words
A system for achieving an alarm masking processing cooperating with an interface panel which includes a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when a failure occurs in said interface panel, to add an intra-office tag to an alarm cell and add an intra-office tag to a monitor cell at said reception side interface and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm which is generated internally within said ATM transmission equipment.
Claim 17
Independent Claim
116 words
A system for achieving an alarm masking processing cooperating with an interface panel which includes a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative when a failure occurs in said interface panel, to add an intra-office tag to an alarm cell and add an intra-office tag to a monitor cell at said reception side interface and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of an alarm which is generated internally within said ATM transmission equipment.
Claim 18
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 13, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 19
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 13, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 20
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 13, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
Claim 21
Independent Claim
102 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative in response to a command from a host equipment or other equipment upon occurrence of an alarm to add an intra-office tag to an alarm cell and send out said alarm cell, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of another alarm of lower priority level.
Claim 22
Independent Claim
102 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative in response to a command from a host equipment or other equipment upon occurrence of an alarm to add an intra-office tag to an alarm cell and send out said alarm cell, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of another alarm of lower priority level.
Claim 23
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 17, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 24
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 17, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 25
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 17, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
Claim 26
Independent Claim
94 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative in response to a command from a host equipment or other equipment to add an intra-office tag to a monitor cell and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of a corresponding monitor alarm.
Claim 27
Independent Claim
94 words
A system for achieving an alarm masking processing cooperating with a reception side interface unit and a transmission side interface unit of an ATM transmission equipment which includes a switching unit for switching virtual paths or virtual channels, wherein said system is operative in response to a command from a host equipment or other equipment to add an intra-office tag to a monitor cell and send out said same, and is further operative, in the transmission side interface, to detect said intra-office tag so as to inhibit the detection of a corresponding monitor alarm.
Claim 28
Dependent Claim
41 words
A system for achieving an alarm masking processing according to claim 21, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving an HEC region in an overhead section.
Claim 29
Dependent Claim
35 words
A system for achieving an alarm masking processing according to claim 21, wherein said intra-office tag is defined in a reserved area which is produced by increasing the transfer rate within said ATM transmission equipment.
Claim 30
Dependent Claim
40 words
A system for achieving an alarm masking processing according to claim 21, wherein said intra-office tag is defined in a reserved area, said reserved area being formed within said ATM transmission equipment by reserving the overhead of an SDH frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-02 | 2000-12-02 | 2001-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-02 | 2004-12-02 | 2005-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-02 | 2008-12-02 | 2009-06-03 | $7700.00 | Window Closed / Lapsed |