[M.3604] Recommendation M.3604 (10/92) - Application of maintenance principles to ISDN primary rate access
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| | Table of Contents | CCITT Rec. M.3604 (10/92) APPLICATION OF MAINTENANCE PRINCIPLES TO ISDN BASIC RATE ACCESS
FOREWORD
APPLICATION OF MAINTENANCE PRINCIPLES TO ISDN PRIMARY RATE ACCESS
1 Scope of application
2 Network configuration for maintenance activities
3 Failure detection
3.1 General
3.2 Automatic supervision
3.3 Automatic supervision of layers 2 and 3 of the D-channel protocol
3.4 Continuity test
4 System protection
5 Failure indication
5.1 Default indication signals
5.2 State tables
5.3 Generation of defect indication signals by the NT2
5.4 Generation of defect indication signals by the subscriber access
5.5 Generation of defect indication signals by the exchange termination
5.6 Transmission quality monitoring by the exchange
5.7 Failure information from the exchange
5.8 Failure information to the subscriber installation
6 Failure localization
6.1 Automatic confirmation of failure within the subscriber primary rate access
6.2 Failed maintenance entity identification
6.3 Loopbacks for maintenance of the subscriber primary rate access
6.4 Failure localization mechanisms
7 Logistic delay time
8 Failure correction
9 Verification
10 Restoration
11 Overall performance measurements
ANNEX A - Subscriber access option
A.1 Digital link without CRC processing (option 1)
A.2 Digital link with CRC processing in the NT1 (option 2)
A.3 Digital link with CRC processing in the LT and NT1 (option 3)
A.4 Digital link with CRC monitoring in the NT1 (option 4)
ANNEX B - Other network configurations
B.1 Digital crossconnect system
B.2 Primary rate leased circuit
ANNEX C - Digital crossconnect system considerations for ISDN
References
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