The DS3 Interface Module gives the FIREBERD 6000 and FIREBERD4000Communications Analyzers the ability to test circuits and equipment operating at the DS3 rate of 44.736 Mb/s. This Module does all of the following: • operates in unframed, Ml3, and C-bit parity environments • monitors DS3 signals using frame errors, Bipolar Violations (BPVs), and parity results • performs full Bit Error Rate Testing (BERT) on DS3s that are out-of-service • transmits and monitors Far End Alarm Control Codes (FEAC) sequences (e.g., alarm conditions and loopbacks) • inserts logic errors, frame errors, and BPVs on live traffic or test patterns. Logic errors and/or BPVs can be inserted singly or at programmable rates; frame errors can be inserted consecutively, to a maximum of 15. 1.3 INTERFACE COMPATIBIÜTY The DS3 Interface Module complies with the following publications and specifications: • Bell Publication CB119 — Interconnection Specification for Digital Cross-Connects • ANSI Specification Tl.404 • CCITT 44.736 MB/S RECOMMENDATIONS — APPLICABLE SECTIONS OF G.703