Juniper Networks M20 manual Channelized STM1 IQ PIC, Snmp SONET/SDH MIB, T1/E1 MIB

M20 Internet Router PIC Guide

Channelized STM1 IQ PIC

Software release ■ JUNOS 5.7 and later

Description	■	One STM1 port
	■ Power requirement: 0.39 A @ 48 V (18.6 W)
	■ Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface
	■ Channelization: STM1c, fractional E1, framed and unframed DS0
Hardware features	■ Packet buffering, Layer 2 parsing
	■ Local and remote loopback testing
Software features	■ Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection
		(RED), weighted random early detection (WRED)
	■ SNMP: SONET/SDH MIB, T1/E1 MIB
	■ Dynamic, arbitrary channel configuration
	■ Full bit error rate test (BERT) patterns at E1 and DS0 levels
	■	Encapsulations:
		■ High-Level Data Link Control (HDLC)
		■ Frame Relay
		■ Circuit cross-connect (CCC)
		■ Translational cross-connect (TCC)
		■ Point-to-Point Protocol (PPP)
Cables and connectors	■ Duplex SC/PC connector (Rx and Tx); single-mode intermediate-reach fiber
LEDs	One tricolor per port:
	■ Off—Not enabled
	■ Green—Online with no alarms or failures

■ Amber—Online with alarms for remote failures

■ Red—Active with a local alarm; router has detected a failure

32■ Channelized STM1 IQ PIC