Operational Conditions - Ericsson CME 20 R6.1 Reference Manual

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32.3.7 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).
AIS Generation
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32.4

Operational Conditions

32.4.1 Operation and Maintenance
Maintenance data such as CRC-4 status and the values of the spare bits
in timeslot 0 can be set by the OMT. The OMT part is described in
chapter Operation and Maintenance Terminal.
The values of the spare bits in timeslot 0 can also be set by the BSC.
The BSC can set the data when the AO DP is in state "Disable". The
new settings will take effect next time the AO DP is enabled. The IDB
is not updated if a new setting is ordered from the BSC.
EN/LZT 123 2697 R5A
1998-08-13
Transmission Interface Handling G.703 2048 kbit/s
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The resolution is 1 ms, but the accuracy is ±25 ms
Base interval for ES, SES, UAS, BFF and SF
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Valid values: 60 and 80 s
Base interval for DF and SF
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Value range: 1-24 h
When entering one of the alarm states LOF, LOS or AIS at PCM-
A input, AIS is transmitted on PCM-B output. AIS is transmitted
until the alarm state is left
When entering and leaving alarm states, the alarm filtering time is
used (AFT).
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