Software release

• Junos OS Release 6.0 and later

Description

• One STM1 port
• Power requirement: 0.39 A @ 48 V (18.6 W)
• Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface
• Channelization: STM1c, fractional E1, framed and unframed DS0

Hardware features

• Packet buffering, Layer 2 parsing
• Local and remote loopback testing

Software features

• Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection (RED), weighted random early detection (WRED)
• SNMP: SONET/SDH MIB, T1/E1 MIB
• Dynamic, arbitrary channel configuration
• Full bit error rate test (BERT) patterns at E1 and DS0 levels
• Encapsulations:
  • High-Level Data Link Control (HDLC)
  • Frame Relay
  • Circuit cross-connect (CCC)
  • Translational cross-connect (TCC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• Duplex SC/PC connector (Rx and Tx); single-mode intermediate-reach fiber

LEDs

One tricolor per port:

• Off—Not enabled
• Green—Online with no alarms or failures
• Yellow—Online with alarms for remote failures
• Red—Active with a local alarm; router has detected a failure

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 (CV-S, CV-L, CV-P)
• 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 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)

Instrumentation (counters)

• Layer 2 per-queue and per-channel packet and byte counters