Reference Manual

Table Of Contents
Transmission Interface Handling DS1 1544 kbit/s
48.3.5 Administration
Supervision of transmission faults and transmission quality can be
performed in different ways. With the help of parameters, the
supervision can be congured to meet a wide range of requirements.
The conguration 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 dening unavailable
state
Value range is 5-15 s
Default value is 10 s
The parameter N1
The parameter N1 denes the threshold numbers for SES.
Value range is 1-1000
Default value is 320
The conguration parameter T
The parameter T denes the time interval for ERATE
supervision
Value range is 1-5 s
Default value is 2 s
The conguration parameter AFT
The conguration parameter AFT denes 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 conguration parameter AFT RAI
The conguration parameter AFT RAI denes 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.
370 (421)
EN/LZT 720 0008 R1A
2001-06-26
© Ericsson Radio Systems AB
All Rights Reserved