OC3/STM1-8 ATM IOA

IOA label	ES2-S1 OC3-8 STM1 ATM IOA
Number of IOA ports	8
Software release	First supported: 7.0.1
Description	50 W maximum Half-height module See Module and Slot Combinations for more information on combining IOAs in a slot. Uses a range of small form-factor pluggable (SFP) transceivers to support different modes and cable lengths.
Capability	OC3/STM1 ATM
Software features	See OCx/STMx ATM IOAs for information about the layer 2 and layer 3 protocols and applications that this module combination supports.
Model compatibility	E320 router E120 router
Line module compatibility	ES2 4G LM
SRP module compatibility	SRP-100 SRP-120 SRP-320
Line module redundancy compatibility	Can be paired with an ES2 4G LM. Must be installed in the same redundancy group as an ES2 4G LM and ES2–S1 REDUND IOA combination.
Port redundancy support	Not applicable
Cables and connectors (multimode)	Up to eight LC full duplex connectors Transmit power: min: –20 dBm max: –14 dBm Center wavelength: 1310 nm Receive input power: min: –30 dBm max: –14 dBm Rated for 2 km (1.2 miles) over 62.5-micron core cable with an optical loss of 0-9 dB or 50-micron core cable with an optical loss of 7 dB See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
Cables and connectors (single-mode intermediate [IR-1])	Up to eight LC full duplex connectors Transmit power: min: –15 dBm max: –8 dBm Center wavelength: 1310 nm Receive input power: min: –34 dBm max: –7 dBm Rated for 15 km (9.3 miles) of 9-micron core cable See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
Cables and connectors (single-mode long reach [LR-1])	Up to eight LC full duplex connectors Transmit power: min: –3 dBm max: 2 dBm Center wavelength: 1310 nm Receive input power: min: –28 dBm max: –7 dBm Rated for 40 km (24.9 miles) of 9-micron core cable See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
LEDs	Board-level LEDs: OK (green)—Physical link is connected properly and is functioning properly FAIL (red)—Failure detected Port LEDs: ALM—Bi-color LED: Yellow: Local loss of signal exists Red: Remote loss of signal exists OK (green)—SONET is up and port is functioning properly. If not lit, a problem exists.
Alarms, errors, and events	See Monitoring SONET/SDH Interfaces in JunosE Physical Layer Configuration Guide, Chapter 3, Configuring Unchannelized OCx/STMx Interfaces.