Alarms, errors, and events | Alarm indication signal (AIS-L, AIS-P) BERT functionality (you can configure one DS3 channel
in BERT mode and configure the remaining channels to transmit and
receive normal traffic) Bit error rate signal degrade (BERR-SD), Bit error rate
signal fail (BERR-SF) Bit interleaved parity errors B1, B2, B3 (CV-S, CV-L,
CV-P) Equipment failure (Does not affect service) Errored seconds (ES-S, ES-L, ES-P), far-end bit errors
REI-L, REI-P (CV-LFE, CV-PFE), far-end block error (FEBE), far-end
errored seconds (ES-LFE, ES-PFE), far-end severely errored seconds
(SES-LFE, SES-PFE), far-end unavailable seconds (UAS-LFE, UAS-PFE) Frame error Idle code, Idle received Loss of frame (LOF), Loss of pointer (LOP-P), Loss of
signal (LOS) Out of frame (OOF) Payload Mismatch (PLM-P), payload unequipped (UNEQ-P) Parity bit (P-bit) disagreements Path parity error Remote defect indication (RDI-L, RDI-P) Severely errored framing (SEF), severely errored framing
seconds (SEFS-S), severely errored seconds (SES-S, SES-L, SES-P),
unavailable seconds (UAS-L, UAS-P) Yellow alarm bit (X-bit) disagreements
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