Juniper-networks M20 Manual de usuario descargar pdf (Pagina 14)

Channelized DS3 PIC

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JUNOS 4.2 and laterSoftware release

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Four DS3 ports

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Power requirement: 0.32 A @ 48 V (15.6 W)

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Supports up to 28 T1 channels per port

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Data Service Unit (DSU) functionality

Description

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Each T1 channel supports a single High-level Data Link Control (HDLC) framer that can

be configured for speeds ranging from DS0 (64 Kbps) through full T1 (1.54 Mbps)

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Predictable throughput on all ports at 1.54 Mbps, full duplex

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Rate limiting on input and output

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Packet buffering, Layer 2 parsing

Hardware features

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DS3 alarm and event counting

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DS3 alarm and event detection

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DS3 diagnostics and loopback control

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B3ZS line encoding

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M13 or C-bit parity

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DS3 Simple Network Management Protocol (SNMP) support (DS3 MIB)

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Per-packet counts and byte counts

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Local and remote loopback testing

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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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Translational cross-connect (TCC)

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Point-to-Point Protocol (PPP)

Software features

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Custom 10-ft (3.05-m) posilock to BNC male cable, separate RX and TXCables and connectors

One tricolor per port:

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Off—Not enabled

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Green—Online with no alarms or failures

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Amber—Online with alarms for remote failures

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Red—Active with a local alarm; router has detected a failure

LEDs

14 ■ Channelized DS3 PIC

M20 Internet Router PIC Guide: End-of-Life PICs

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Juniper-networks M20 Manual de usuario Pagina 14

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