![](/images/backgrounds/142068/bg20.png)
■JUNOS 5.7 and laterSoftware release
■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
Description
■Packet buffering, Layer 2 parsing
■Local and remote loopback testing
Hardware 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)
Software features
■Duplex SC/PC connector (Rx and Tx); single-mode intermediate-reach fiberCables and connectors
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
LEDs
32 ■Channelized STM1 IQ PIC
M20 Internet Router PIC Guide