Software release

• Junos OS Release 5.6 and later

Description

• Ten E1 ports
• Power requirement: 0.15 A @ 48 V (7.2 W)
• Fine-grained queuing per logical interface
• Channelization: E1, DS0

Hardware features

• Data service unit (DSU) functionality
• Ports configurable as clear channel E1 interfaces with 2.048-Mbps connectivity
• Supports unframed E1 G.703 and G.704 framing modes
• Supports HDB3 line coding
• CRC4 configurable
• 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)
• Simple Network Management Protocol (SNMP): E1 MIB, DS0 MIB
• Dynamic, arbitrary channel configuration
• Full bit error rate test (BERT)
• Encapsulations:
  • Circuit cross-connect (CCC)
  • Translational cross-connect (TCC)
  • Frame Relay
  • High-Level Data Link Control (HDLC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• 120-ohm RJ-48C

LEDs

One bicolor per E1 port:

• Off—Port not enabled
• Green—Physical E1 link is up; individual subchannels can be down
• Red—Physical E1 link is down

Alarms, errors, and events

• Alarm indication signal (AIS)
• Loss of frame (LOF)
• Out of frame (OOF)
• Failed signal rate (FSR)

Instrumentation (counters)

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