Juniper Networks M120 Benutzerhandbuch

T1 PIC

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JUNOS 8.0R2 and later (Type 1)

NOTE: This PIC is not supported in JUNOS Release 8.1R1.

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Four T1 ports

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Power requirement: 0.08 A @ 48 V (3.7 W)

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Supports clear channel T1 per port (1.544 Mbps per channel)

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Supports attenuation up to –12 dBm

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Per-port loop timing

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Onboard DSU functionality for T1 connectivity

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ESF and SF framing

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B8ZS and AMI coding

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ESF CSU counters, WRT impairments, and CRC checking

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Local DS1 line loopback, remote line loopback

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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)

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100-ohm RJ-48 connector

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

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T1 PIC

M120 Internet Router PIC Guide