Software release

• Junos OS Release 4.0 and later

Hardware features

• High-performance parsing of SONET/SDH frames
• OAM fault management processes Alarm indication signal (AIS) and remote defect indicator (RDI) cells
• ASIC-based packet segmentation and reassembly (SAR) management and output port queuing
• 16-MB SDRAM memory for ATM SAR
• Packet buffering, Layer 2 parsing

Cables and connectors

• Duplex SC/PC connector (RX and TX)
• SONET/SDH OC12 fixed transceivers:
  • Multimode
  • Single-mode intermediate reach (IR-1)

  Optical interface specifications—see SONET/SDH OC12/STM4 Optical Interface Specifications

Alarms, errors, and events

• Alarm indication signal (AIS-L, AIS-P)
• Bit error rate signal degrade (BERR-SD), bit error rate signal fail (BERR-SF)
• Bit interleaved parity errors B1, B2, B3
• Errored seconds (ES-S, ES-L, ES-P), far-end bit errors REI-L, REI-P (CV-LFE, CV-PFE), 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)
• Loss of cell delineation (LOC), loss of frame (LOF), loss of pointer (LOP-P), loss of signal (LOS)
• Payload mismatch (PLM-P), payload unequipped (UNEQ-P)
• 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)