Software release
- JUNOS 5.6 and later
Description
- Four DS3 ports
- Power requirement: 0.32 A @ 48 V (15.6 W)
- Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface
- Channelization: DS3, DS0
Hardware features
- Data service unit (DSU) functionality
- Subrate and scrambling:
- Digital Link/Quick Eagle
- Kentrox
- Larscom
- ADTRAN
- Verilink
- B3ZS line encoding
- M13 or C-bit parity
- Full bit error rate test (BERT)
- 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): DS1 MIB, DS3 MIB
- Dynamic, arbitrary channel configuration
- 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
- Standard DS3 BNC coaxial cable interfaces
LEDs One tricolor per port:
- Off—Not enabled
- Green—Online with no alarms or failures
- Amber—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)
- Excessive zeros (EXZ)
- Far-end block error (FEBE)
- Frame error
- Idle code, Idle received
- Line code violation (LCV)
- Loss of signal (LOS)
- Out of frame (OOF)
- Parity bit (P-bit) disagreements
- Path parity error
- Yellow alarm bit (X-bit) disagreements
Instrumentation (counters)
- Layer 2 per-queue and per-channel packet and byte counters
