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E1 PIC (M7i Router)
Software release | - Junos OS Release 6.0 and later
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Description | - Four E1 or coaxial ports
- 4-port, 120-ohm, RJ-48
- 4-port, 75-ohm, coaxial
- Power requirement: 0.08 A @ 48 V (3.74 W)
- Onboard DSU functionality for E1 connectivity
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Hardware features | - High-performance throughput on each port at speeds up
to 2.048 Mbps, full duplex
- Maximum transmission units (MTUs) of up to 4500 bytes
- Per-interface diagnostics and loopback control
- Per-interface shaping on output
- Per-interface alarm and event counting and detection
- HDB3 line coding
- 4-bit CRC for G.704 framed mode
- Per-port loop timing
- Balanced and unbalanced modes
- Packet buffering, Layer 2 parsing
- Full bit error rate test (BERT)
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Software features | |
Cables and connectors | - Two versions:
- Four RJ-48 connectors (one per port)
- Four coaxial connectors
- Custom 10 ft (3.05 m) posilock to BNC male cable, separate
Rx and Tx
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LEDs | - 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
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Alarms, errors, and events | - Alarm indication signal (AIS)
- Bipolar violations
- Excessive zeros
- Far-end block errors (FEBE, E-bit errors)
- Loss of frame (LOF)
- Loss of signal (LOS)
- Local and remote loopback diagnostics
- Yellow alarm bit (X-bit) disagreements
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Published: 2012-03-21
Copyright© 1999-2012 Juniper Networks, Inc. All rights reserved.
