The following values can be read from the event:
sync_lost_percent - Error percentage within the analysis window
sync_lost_count - How many times sync has been lost
cng_count - Counter of confort noise packets
err_samples - Number of samples that did not match the sequence
* Added BERT stats channel variables
* Check if the channel is going down when out of sync to avoid flagging it
as out of sync, if the channel is going down it is expected to have some errors
* Calculate sampling error rate over a time window
* Create the following variables to control bert testing behavior:
bert_timeout_ms - Milliseconds to wait for bert sync before timing out
bert_window_ms - Window of time to calculate sampling error rate percentage
bert_max_err - Max percentage of error tolerated before going out of sync
bert_hangup_on_error - Hangup when error occurs (Timeout or going out of sync)