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Feature
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• Two independent T1/E1 or fractional T1/E1 ports with RJ-48C physical connectors
• Software-configurable T1/E1 mode
• T1/E1 interface loopbacks, 75- and 120-ohm impedances (balanced and unbalanced), framing (SF and ESF), and line codes (AMI, B8ZS, HDB3); support for E1 structured and unstructured operation
• LEDs for data carrier detect (DCD), loopback (LP), and alarm (AL)
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Diagnostics
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• ANSI T1.403 Annex B/V.54 loopup/down code recognition, network loopback, user initiated loopbacks, network payload loopback, local DTE loopback, remote line (codes: V.54, loop up, and loop down)
• BERT patterns all 0's, all 1's, 1:2, 1:8, 3:24, QRW, QRSS, 63, 511, 2047, and V.54/T1.403 Annex B bit patterns; two user-programmable 24-bit patterns
• Alarm detection: Alarm indication signal (AIS), time slot 16 AIS, remote alarm, far-end block error (FEBE), out of frame (OOF), cyclic redundancy check (CRC) multiframe OOF, signaling multiframe OOF, frame errors, CRC errors, loss of network signal (red alarm), loss of network frame, receive (blue alarm) (AIS) from network, receive (yellow) from network performance reports/error counters CRC, errored seconds, burst errored seconds, severely errored seconds, Ft and Fs framing errors for SF framing, FPS framing errors for ESF framing, 24-hour history stored in 15-minute increments
• Onboard processor for real-time facility data link (FDL) messaging, in-band code detection and insertion, alarm integration, and performance monitoring
• Full FDL support and FDL performance monitoring, according to configurable standard: ANSI T1.403 or AT&T TR 54016
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