Juniper Networks M20 manual Channelized OC12 PIC

M20 Internet Router PIC Guide

Channelized OC12 PIC

Software release ■ JUNOS 4.0 and later

Description	■	One OC12 port
	■ Power requirement: 0.23 A @ 48 V (10.8 W)
	■	12 DS3 channels
	■ Supports IP version 4 (IPv4) unicast and multicast as well as MPLS, Intermediate
		System-to-Intermediate System (IS-IS), Open Shortest Path First (OSPF), and Border
		Gateway Protocol (BGP)
Hardware features	■	ASIC-based, high-performance throughput on all ports
	■ Integrated DSU functionality with subrate and scrambling support for each DS3 channel
	■ Class-of-service support for each DS3 channel
	■ Dual-router SONET automatic protection switching (APS)
	■ Rate policing on input for each DS3 channel
	■ Rate shaping output for each DS3 channel
	■ Packet buffering, Layer 2 parsing
Software features	■	M13/C-bit parity encoding
	■ Full instrumentation per DS3 channel
	■ DS3 diagnostics and loopback control
	■ DS3 alarm and event counting and detection
	■ DS3 Far-end Alarm and Control (FEAC) channel support
	■	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)
	■ Optical interface support—See Table 9 on page 29
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

28■ Channelized OC12 PIC