Juniper-networks M7I Instrukcja Użytkownika Pobierz pdf (Strona 53)

Channelized T1 IQ PIC (M7i Router)

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Junos OS Release 7.4 and laterSoftware release

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Ten T1 ports

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Power requirement: 0.15 A @ 48 V (7.2 W)

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Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface.

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Channelization: T1, FT1, NxDS0

Description

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Data service unit (DSU) and channel service unit (CSU) functionality

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Ports configurable as clear channel T1 interfaces with 1.544-Mbps connectivity

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Framing: Superframe (SF or D4) and Extended Superframe (ESF)

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Supports B8ZS (bipolar 8-zero substitution) and AMI (alternate mark inversion) line coding

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Local, remote, and payload loopback testing

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ANSI T1.403 loopback support:

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Responds to embedded loopback commands upon receipt of an FDL command from remote

end with loopup and loopdown at both line and payload level

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Insertion of loopback commands enables remote CSU/NIU/Smartjack to enter loopback

and loopdown at both the line and payload level (ANSI and Telcordia)

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Inband loopback support:

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Responds to inband loopback commands at both the line and payload level (ANSI and

Telcordia)

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Insertion of inband loopback commands at both the line and payload level (ANSI and

Telcordia)

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Clocking support of external (line) and internal

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Buildout support of the following ranges:

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0 through 132 (Line buildout is from 1 through 132 feet)

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133 through 265 (Line buildout is from 133 through 265 feet)

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266 through 398 (Line buildout is from 266 through 398 feet)

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399 through 531 (Line buildout is from 399 through 531 feet)

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532 through 655 (Line buildout is from 532 through 655 feet)

Hardware features

Channelized T1 IQ PIC (M7i Router)

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