Software release

• Junos OS Release 5.2 and later

Description

• One E3 port
• Power requirement: 0.32 A/48 V @ 15.3 W
• 63 E1 channels

Hardware features

• Each E1 channel supports a single High-Level Data Link Control (HDLC) framer that can be configured for speeds from DS0 (64 Kbps) through full E1 (2 Mbps) in 64-Kbps increments
• Onboard DSU functionality for E1 and fractional E1 connectivity
• Integrated support for G.703 and unframed mode and G.704 framed mode with CRC; this feature is user-configurable
• Configurable clock source: Internal or loop
• Per-port loop timing
• Rate limiting on input and output
• NxE1 service with Multilink Point-to-Point Protocol (MLPPP, RFC 1990) delivered by the Link Services and Multilink Services PICs

Software features

• SDH mapping:
  • Tributary Unit Group 3 (TUG-3)
• E1 support:
  • Full instrumentation per E1 channel
  • Integrated support for G.703 unframed mode and G.704 framed mode
  • 4-bit CRC for G.704 framed mode
  • HDB3 coding
  • Local E1 line loopback and remote line loopback
  • Per-channel BERT testing
• Encapsulations:
  • Cisco High-Level Data Link Control (HDLC)
  • Frame Relay
  • Multiprotocol Label Switching (MPLS) circuit cross-connect (CCC)
  • MPLS translational cross-connect (TCC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• Single-mode fiber
• Duplex SC/PC connector (RX and TX)

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)
• Bit error rate signal degrade (BERR-SD), bit error rate signal fail (BERR-SF)
• Bit error rate testing (BERT) per E1 channel
• Bit interleaved parity errors B1, B2, B3 (CV-S, CV-L, CV-P)
• 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)
• Errored seconds (ES-S, ES-L, ES-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)
• Yellow alarm bit (X-bit) disagreements