Transmission Interface Handling DS1 1544 kbit/s
54.3.5 Administration
Supervision of transmission faults and transmission quality can be
performed in different ways. With the help of parameters, the
supervision can be configured to meet a wide range of requirements.
The configuration parameters can only be changed when the AO DP is
in state “Disable”. The parameters of interest are given below.
•
The parameters P and Q
−
The parameters P and Q are used for defining unavailable
state
−
Value range is 5-15 s
−
Default value is 10 s
•
The parameter N1
−
The parameter N1 defines the threshold numbers for SES.
Value range is 1-1000
− Default value is 320
•
The configuration parameter T
− The parameter T defines the time interval for ERATE
supervision
−
Value range is 1-5 s
− Default value is 2 s
• The configuration parameter AFT
−
The configuration parameter AFT defines the Alarm
Filtering Time for all the fault supervision functions
except RAI supervision
− Value range is 50-5000 ms
− Default value is 125 ms
− The resolution is 1 ms, but the accuracy is ±25 ms
• The configuration parameter AFT RAI
− The configuration parameter AFT RAI defines the Alarm
Filtering Time for the fault supervision function RAI
supervision
− Value range is 50-5000 ms
− Default value is 125 ms
− The resolution is 1 ms, but the accuracy is ±25 ms
• Base interval for ES, SES, UAS, BFF and SF
− Valid values: 60 and 126 seconds. The value 126
seconds must be used when BFF supervision is activated
in the BSC.
432 (485)
EN/LZT 720 0008 P2A
2001-11-28
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— All Rights Reserved —
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