Transmission Interface Handling DS1 1544 kbit/s
The code word “00100100 11111111” received four times in a
sequence will make an action to disconnect a loop of type LLB or
PLB, or both loops.
2.
A received AIS makes the same action as the universal loopback
deactivate command, releasing both payload and line loopbacks.
The loop release is made after the Alarm Filtering Time (AFT)
has expired. The AFT is described in section Supervision of
Transmission Faults under paragraph Description, and in section
Administration.
The default setting of FDL_use is:
Used only for RAI
The parameters can be modified from OMT. The new setting is
activated immidiately. Thus, the updated parameters are used
when the selection of FDL use is performed.
Two PCM paths are supported: PCM-A and PCM-B.
EN/LZT 123 2697
R5A
1998-08-13
213 (306)
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