# OC12/STM4 POS Multimode Without APS/MSP Redundancy Module Combination

> Line module label | OCx/STMx POS
> I/O module label | OC12 STM4 I/O MULTI MODE
> Number of I/O ports | 1
> Software release | First supported: 2.0.0 Final supported: Not applicable
> Description | 120 W Unchannelized, concatenated OC12/STM4 for POS
> Type | EFA ASIC
> Capability | OC12/STM4 HDLC framing
> Software features | See OCx/STMx POS and OC48 Modules for information about the layer 2 and layer 3 protocols and applications that this module combination supports.
> Model compatibility | ERX7xx models ERX14xx models ERX310 router
> SRP module compatibility | SRP-5G+ SRP-10G SRP-40G SRP-40G PLUS SRP-SE10G
> Module redundancy support | 1:N redundancy NOTE: Line module redundancy is not supported on the ERX310 router.
> Cables and connectors | SC full duplex Tx power: min: –19 dBm max: –14 dBm Center wavelength: 1310 nm Rx 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 ERX Hardware Guide, Chapter 5, Cabling ERX Routers for more information.
> LEDs | See Module LEDs.
> Alarms, errors, and events | See Monitoring SONET/SDH Interfaces in JunosE Physical Layer Configuration Guide, Chapter 3, Configuring Unchannelized OCx/STMx Interfaces.