Transmission Interface Handling DS1 1544 kbit/s
− 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.
• Base interval for DF and SF
− Value range: 1-24 h
33.3.7 Multidrop Layer 1
For an RBS configured for multidrop, the function is initiated during
restart of CMRU.
For an RBS not configured for multidrop, the function is initiated when
the parameter Network Topology is set by the OMT to indicate
multidrop (cascade).
210 (306)
EN/LZT 123 2697 R5A
1998-08-13
© Ericsson Radio Systems AB
— All Rights Reserved —
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