• Multirate mode support (OC-3 and OC-12) • Synchronization • Local (internal) or loop timed (recovered from network) • Pointer activity monitoring • Local (diagnostic) and line (network) loopback • Payload mapping • POS with 1 + X^43 self-synchronous scrambler • SONET/SDH compliance • Telcordia (Bellcore) GR-253-CORE (as applicable) • ANSI T1.105, T1.231 • ITU-T G.707, G.957, G.825 (as applicable) Supported SONET/SDH alarm and signal events • Signal failure bit error rate (SF-ber) • Signal degrade bit error rate (SD-ber) • Signal label payload construction (C2) • Path trace byte (J1) • Section • Loss of signal (LoS) • Loss of frame (LoF) • Error counts for B1 • Threshold crossing alarms (TCA) for B1 • Line • Line alarm indication signal (LAIS) • Line remote defect indication (LRDI) • Line remote error indication (LREI) • Error counts for B2 • TCA for B2 • Path • Path alarm indication signal (PAIS) • Path remote defect indication (PRDI) • Path remote error indication (PREI) • Error counts for B3 • TCA for B3 • Loss of pointer (LoP) • Positive stuffing event (PSE) • Negative stuffing event (NSE) • Path unequipped indication signal (PUNEQ) • Path payload mismatch indication signal (PPLM) |