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Only 14 inches (35.56 cm) in height, the M20 design delivers increased port density, performance of 20+ Gbps throughput, scalability, and reliability in a space-efficient package. The M20 offers fully redundant hardware, including redundant switching fabrics and Routing Engines to increase system availability. The M20 supports 16 PICs and up to OC-48/STM-16 uplink speeds in a compact package ideal for the provider edge in medium and large PoPs.

Juniper M20 Series Base Unit
	M20BASE-AC	M20 Base Unit: 4-slot chassis with cooling system, Midplane (Used Juniper)
	M20BASE-DC	M20 Base Unit: 4-slot chassis with cooling system, Midplane (Used Juniper)
Juniper M20 Series Flexible PIC Concentrator (FPC)
	FPC	Flexible PIC Concentrator (Used Juniper)
	FPC-E	Enhanced Flexible PIC Concentrator (requires 4.4R2 or later SW). (Used Juniper)
Juniper M20 Series Integrated Interfaces (Includes FPC and PIC)
	I-1OC48-SON-SMIR-E	Enhanced 1-Port SONET/SDH OC-48/STM-16 Interface(PIC Plus FPC) (Used Juniper)
	I-1OC48-SON-SMLR-E	Enhanced 1-port SONET/SDH OC-48/STM-16 interface(PIC plus FPC) (Used Juniper)
	I-1OC48-SON-SMSR-E	Enhanced 1-port SONET/SDH OC-48/STM-16 interface(PIC plus FPC) (Used Juniper)
	I-1OC48SONSMIR-E-U	Upgrade and trade-in. OC48-SMIR for I-1OC48-SON-SMIR-E. (Used Juniper)
	I-1OC48SONSMLR-E-U	Upgrade and trade-in. OC48-SMLR for I-1OC48-SON-SMLR-E. (Used Juniper)
Juniper M20 Series Physical Interface Card (PIC)
	P-10CHE1-RJ48	10-Port E1/Channelized E1 PIC (Used Juniper)
	P-12FE-TX	12-port 10/100 TX Ethernet PIC. Includes 3-meter RJ21 cable (Used Juniper)
	P-1CHOC12-DS3-SMIR	1-Port Channelized OC-12 to DS-3 PIC (12 DS-3 Channels) (Used Juniper)
	P-1CHSTM1-SMIR	1-port Channelized STM1-E1 PIC (Used Juniper)
	P-1GE-LH	1-port Gigabit Ethernet PIC, Long-haul optics (Used Juniper)
	P-1GE-LX	1-port Gigabit Ethernet PIC, LX Optics (Used Juniper)
	P-1GE-LX-B	1-port Gigabit Ethernet PIC, LX Optics (supports CCC-for-VLANs) (Used Juniper)
	P-1GE-SX	1-port Gigabit Ethernet PIC, SX Optics (Used Juniper)
	P-1GE-SX-B	1-port Gigabit Ethernet PIC, SX Optics (supports CCC-for-VLANs) (Used Juniper)
	P-1OC12-ATM-MM	1-port ATM OC-12/STM4 PIC, Multimode (Used Juniper)
	P-1OC12-ATM-SMIR	1-port ATM OC-12/STM4 PIC, Single-Mode Intermediate Reach (Used Juniper)
	P-1OC12-SON-MM	1-port SONET/SDH OC-12/STM4 PIC, Multimode (Used Juniper)
	P-1OC12-SON-SMIR	1-port SONET/SDH OC-12/STM4 PIC, Single-Mode, Intermediate Reach (Used Juniper)
	P-2MCDS3	2-port Multichannel DS3 (to DS0) PIC (ships with cables) (Used Juniper)
	P-2OC3-ATM-MM	2-port ATM OC-3/STM1 PIC, Multimode (Used Juniper)
	P-2OC3-ATM-SMIR	2-port ATM OC-3/STM1 PIC, Single-Mode, Intermediate Reach (Used Juniper)
	P-4CHDS3	4-port Channelized DS3 PIC (ships with cables) (Used Juniper)
	P-4DS3	4-port DS-3 PIC (with cables) (Used Juniper)
	P-4DS3-ATM	4-port ATM DS3 PIC (ships with cable) (Used Juniper)
	P-4E1-COAX	4-port E1 PIC (75-ohm BNC connectors) (ships with cables) (Used Juniper)
	P-4E1-RJ48	4-port E1 PIC (120-ohm RJ48 connectors) (Used Juniper)
	P-4E3	4-port E3 PIC (with cables) (Used Juniper)
	P-4E3-ATM	4-port ATM E3 PIC (ships with cable) (Used Juniper)
	P-4FE-TX	4-port Fast Ethernet PIC, TX interface, RJ45 connector. (Used Juniper)
	P-4OC3-SON-MM	4-port SONET/SDH OC-3/STM1 PIC, Multimode (Used Juniper)
	P-4OC3-SON-SMIR	4-port SONET/SDH OC-3/STM1 PIC, Single-Mode, Intermediate Reach (Used Juniper)
	P-4T1-RJ48	4-port T1 PIC, (120-ohm, RJ48 connectors) (Used Juniper)
	P-8FE-FX	8-port Fast Ethernet PIC, FX interface, MT-RJ connector, MM (Used Juniper)
	P-ES-800	IPSec Processing Services PIC, 800 Mbps (Used Juniper)
	P-TUNNEL	Tunnel Services PIC (Used Juniper)
Juniper M20 Series Power Options
	PWR-M20-AC-S	M20 AC Power Supply Spare (Used Juniper)
	PWR-M20-DC-S	M20 DC Power Supply Spare (Used Juniper)
Juniper M20 Series Routing Engine
	RE-333-768-BB	Routing Engine board with 333 MHz Pentium II, 768 MB DRAM (Used Juniper)
	RE-333-768-R	Routing Engine board with 333 MHz Pentium II, 768 MB DRAM, 80 MB (Used Juniper)
	RE-333-768-S	Routing Engine board spare (333 MHz Pentium II, 768 MB DRAM (Used Juniper)
	RE-333-768-WW-S	Routing Engine board spare (333 MHz Pentium II, 768 MB DRAM (Used Juniper)
	RE-600-2048-BB	Routing Engine board with 600 MHz Pentium III, 2048 MB DRAM (Used Juniper)
	RE-600-2048-R	Routing Engine board with 600 MHz Pentium III, 2048 MB DRAM (Used Juniper)
	RE-600-2048-S	Routing Engine board spare (600 MHz Pentium III, 2048 MB DRAM (Used Juniper)
	RE-600-2048-WW-S	Routing Engine board spare (600 MHz Pentium III, 2048 MB DRAM (Used Juniper)
Juniper M20 Series Spares and Accessories
	CHAS-MP-M20-S	M20 Chassis with Installed Midplane Spare (Used Juniper)
Juniper M20 Series System and Switch Board
	SSB-E-M20	Enhanced M20 System and Switch Board (with Internet Processor II (Used Juniper)