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E1 PIC
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JUNOS 6.1 and laterSoftware 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
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Integrated support for G.703 unframed mode and G.704 framed mode with CRC; this
feature is user-configurable
NOTE: The G.704 implementation supports speeds slower than 2.048 Mbps; multiple channels
within a single E1 interface are not supported.
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Configurable clock source: Internal or loop
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Encapsulations:
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High-Level Data Link Control (HDLC)
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Frame Relay
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Circuit cross-connect (CCC)
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Point-to-Point Protocol (PPP)
Software features
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Two versions:
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Four RJ-48 connectors (one per port)
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Four coaxial connectors
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Custom 10-ft (3.05-m) posilock to BNC male cable, separate Rx and Tx
Cables and connectors
34 ■ E1 PIC
M10i Internet Router PIC Guide