Juniper Networks M7I - Manual (Page 26)

Channelized DS3 and E3 Enhanced IQ (IQE) PIC (M7i Router)
RX RX
RX
RX
S
T A
TUS
S
T A
TUS
S
T A
TUS
S
T A
TUS
RX RX RX
TX
TX
TX
TX
RX PORT 1
PORT 0
PORT 1
PORT 2
PORT 3
PORT 3 PORT 2
g006017
• Junos OS Release 10.2 and later (Type 1) Software release
• Four E3 or Channelized DS3 ports
• E3 or Channelized DS3 is configurable on a per-port granularity
• DS3 channelization:
• 4 DS3 channels
• 112 DS1 channels
• 1011 DS0 channels
• Power requirement: 0.53 A @ 48 V (25.4 W)
Description
• Ports are numbered 0 through 3 from left to right Hardware features
Software features • Maximum transmission units (MTUs) of up to 9000 bytes
• Dynamic, arbitrary channel configuration
• Subrate and scrambling:
NOTE: Only DS3 interfaces support subrate and scrambling.
• Digital Link/Quick Eagle
• Kentrox
• Larscom
• ADTRAN
• Verilink (subrate: only port A mode)
NOTE: For DS3 interfaces, Verilink does not function if an IQE interface is paired with an IQ
interface.
• Data service unit (DSU) functionality
• B3ZS line encoding
• Framing: M13, C-bit parity, framed clear channel
• Full bit error rate test (BERT) for DS0, DS1, and DS3
• ANSI T1.403 FDL
• Internal and loop clocking for DS3 and DS1
• DS3 far end alarm and control (FEAC) channel
• Local line, remote line, and remote playback loopback testing for each DS3 and DS1channels
• 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.
• Simple Network Management Protocol (SNMP): DS1 MIB, DS3 MIB
Copyright © 2010, Juniper Networks, Inc. 26
M7i Multiservice Edge Router PIC Guide