System for achieving alarm masking processing

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.

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.

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.

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.

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.