• Cisco ONS-SI-155-I1 155Mb SFP OC-3/STM-1 IR-1 transceiver module
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Cisco

Cisco ONS-SI-155-I1 | 155Mb SFP | OC-3/STM-1 IR-1 (I-1) | 1310nm | 15km SMF | LC | Industrial Temp

ONS-SI-155-I1

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Description

Industrial-temp OC-3/STM-1 SFP for intermediate-reach SDH/SONET. Operates at 1310nm over single-mode fiber with LC connector for links up to 15km, ideal for metro access rings and legacy transport interconnects.

Features

- OC-3/STM-1 intermediate-reach (15 km) at 1310nm
- Industrial-temperature operation
- LC duplex, single-mode fiber
- Standards-based per ITU-T G.957
- MSA SFP for broad platform compatibility

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Line rate: 155.52 Mb/s (OC-3/STM-1)
- Optical class: IR-1 / I-1 per ITU-T G.957
- Form factor: SFP (hot-swappable)
- Wavelength: 1310 nm
- Fiber type: Single-mode (SMF, 9/125 µm recommended)
- Connector: LC duplex
- Reach: up to 15 km (link-budget dependent)
- Operating temperature: Industrial (extended) range
- Application: SDH/SONET intermediate-reach interconnects

FAQs

Q: Is this compatible with Ethernet 100Mb or 1Gb ports?
A: No. It is for SDH/SONET OC-3/STM-1 ports, not Ethernet PHYs.

Q: Can I mix IR-1 with LR-1 or LR-2 on the far end?
A: Interoperability requires matching optical class and link budget. Use the same optical class at both ends for reliable links.

Q: What fiber type is required?
A: Single-mode fiber (SMF). Multimode is not supported for IR-1 specifications.

Q: Does it support digital diagnostics (DDM/DOM)?
A: Not specified; availability depends on module revision and host platform support.

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