Juniper Networks M7I - Manual (Page 31)

Channelized E1/T1 Enhanced IQ (IQE) PIC (M7i Router)
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• Junos OS Release 10.2 and later (Type 1) Software release
• Ten E1 or T1 ports
• DS1 and E1 interfaces are selectable on a per-port granularity
• E1 channelization per PIC:
• 10 E1 channels
• 310 DS0 channels
• T1 channelization per PIC:
• 10 T1 channels
• 240 DS0 channels
• Power requirement: 0.52 A @ 48 V (24.73 W)
Description
• Top row: 1, 3, 5, 7, and 9 from left to right
• Bottom row: 0, 2, 4, 6, and 8 from left to right
Hardware features
Software features • Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection
(RED), weighted random early detection (WRED)
• Enhanced fine-grained queuing per logical interface. See the Junos OS Class of Service
Configuration Guide for more information about class of service features.
• Support sending and receiving in-band loopback codes in both framed and unframed mode:
• Framed in-band loopback at CSU
• Framed in-band loopback at Smartjack (ANSI)
• Unframed in-band loopback at CSU
• Unframed in-band loopback at Smartjack (ANSI)
• You can configure the following framing modes using the CLI:
• T1—SF (D4/superframe), ESF (extended superframe)
• E1—G704, G704–no-crc4, unframed
• Packet buffering, Layer 2 parsing
• Local line, remote line, and remote payload loopback testing; each channel can be looped
individually and independently of other channels (DS1/E1 channels)
• Simple Network Management Protocol (SNMP): T1 MIB (RFC 1406)
• Dynamic, arbitrary channel configuration
• Full bit error rate test (BERT)
• Clocking: internal and loop (clock recovered from network and use for transmit). Internal timing
is the default for channelized T1 ports. The external master clock can be a multiple of 2.048
MHz or 1.544 MHz for E1 or T1 operation.
• Line coding:
31 Copyright © 2010, Juniper Networks, Inc.
Channelized E1/T1 Enhanced IQ (IQE) PIC (M7i Router)