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Bug #4976
closednetwork with no emergency calls - Is BSC still performing pre-emption?
Start date:
01/26/2021
Due date:
% Done:
100%
Spec Reference:
Description
It is suspected by a user that the following events may take place:
- netwokr does not permit/enable emergency calls
- sometimes, due to the bad RACH correlation properties, fals positive RACHs are detected
- some of those fall within the "emergency" category
- osmo-bsc is still pre-empting/kickning out some other channel
Based on a quick look of the code, this might be possible.
In fact, I don't understand why we even bother to enqueue a RACH request in this situation. IMHO, the check should be done before enqueueing the RACH request to bts->chan_rqd_queue if it is for RACH and we don't support RACH to begin with? But I'm not an expert on the related code.
Please investigate.
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