Juniper Networks M7I - Manual (Page 53)

Channelized T1 IQ PIC (M7i Router)
• Junos OS Release 7.4 and later Software release
• Ten T1 ports
• Power requirement: 0.15 A @ 48 V (7.2 W)
• Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface.
• Channelization: T1, FT1, NxDS0
Description
• Data service unit (DSU) and channel service unit (CSU) functionality
• Ports configurable as clear channel T1 interfaces with 1.544-Mbps connectivity
• Framing: Superframe (SF or D4) and Extended Superframe (ESF)
• Supports B8ZS (bipolar 8-zero substitution) and AMI (alternate mark inversion) line coding
• Local, remote, and payload loopback testing
• ANSI T1.403 loopback support:
• Responds to embedded loopback commands upon receipt of an FDL command from remote
end with loopup and loopdown at both line and payload level
• Insertion of loopback commands enables remote CSU/NIU/Smartjack to enter loopback
and loopdown at both the line and payload level (ANSI and Telcordia)
• Inband loopback support:
• Responds to inband loopback commands at both the line and payload level (ANSI and
Telcordia)
• Insertion of inband loopback commands at both the line and payload level (ANSI and
Telcordia)
• Clocking support of external (line) and internal
• Buildout support of the following ranges:
• 0 through 132 (Line buildout is from 1 through 132 feet)
• 133 through 265 (Line buildout is from 133 through 265 feet)
• 266 through 398 (Line buildout is from 266 through 398 feet)
• 399 through 531 (Line buildout is from 399 through 531 feet)
• 532 through 655 (Line buildout is from 532 through 655 feet)
Hardware features
53 Copyright © 2010, Juniper Networks, Inc.
Channelized T1 IQ PIC (M7i Router)