Juniper M120 - Page 50

E1 PICs
Left: E1 RJ-48 PIC; Right: E1 Coaxial PIC
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JUNOS 8.0R2 and later (Type 1)
NOTE: These PICs are not supported in JUNOS Release 8.1R1.
Software release
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Four E1 or coaxial ports
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Power requirement: 0.08 A @ 48 V (3.74 W)
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Two versions:
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4-port, 120-ohm, RJ-48
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4-port, 75-ohm, coaxial
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Onboard DSU functionality for E1 connectivity
Description
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High-performance throughput on each port at speeds up to 2.048 Mbps, full duplex
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Maximum transmission units (MTUs) of up to 4500 bytes
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Per-interface diagnostics and loopback control
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Per-interface shaping on output
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Per-interface alarm and event counting and detection
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HDB3 line coding
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4-bit CRC for G.704 framed mode
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Per-port loop timing
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Balanced and unbalanced modes
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Packet buffering, Layer 2 parsing
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Full bit error rate test (BERT)
Hardware features
50 ■ E1 PICs
M120 Internet Router PIC Guide