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Cisco ONS-SI-155-L2 OC-3/STM-1 LR-2 SFP 1550nm 100 km
155 Mbps (OC-3 / STM-1) OC-3/STM-1 LR-2 SFP transceiver, 1550 nm, up to 100 km, SONET/SDH. Genuine Cisco part for Cisco ONS 15454 MSTP / NCS 2000, NCS 1000 and NCS 4000 optical-transport cards.
- Manufacturer
- Cisco Systems
- Mfr part number
- ONS-SI-155-L2
- Series
- ONS/NCS (optical transport) · 155M SFP
- Category
- Fiber optic transceiver modules
- Datasheet
- ONS-SI-155-L2 datasheet (PDF)
ONS-SI-155-L2 specifications
| Attribute | Value |
|---|---|
| Part Number | ONS-SI-155-L2 |
| Manufacturer | Cisco Systems |
| Brand | Cisco |
| Standard | OC-3/STM-1 LR-2 (L-1.2) |
| Form Factor | SFP, hot-swappable |
| Data Rate | 155 Mbps (OC-3 / STM-1) |
| Protocol | SONET/SDH |
| Wavelength | 1550 nm |
| Media | Single-mode fiber (OS2) |
| Max Distance | 100km |
| Connector | LC duplex |
| Lifecycle | Current Cisco part |
| Case Temp | -40 to 85 °C (industrial) |
| Dimensions | 8.5 × 13.4 × 56.5 mm |
| Compliance | IEEE 802.3 / Telcordia as applicable, SFF-8472 (SFP MSA) |
| Product line | ONS/NCS (optical transport) |
| Cisco description | ONS SONET/SDH SFP |
Values are from Cisco datasheets, Cisco end-of-sale bulletins, Cisco hardware guides and the Cisco Transceiver Module Group compatibility matrix (Nov 2026). Confirm your device model and software release with us before ordering.
About the Cisco ONS-SI-155-L2
The Cisco ONS-SI-155-L2 is a hot-swappable SFP OC-3/STM-1 LR-2 optical transceiver for 155 Mbps SONET/SDH links over single-mode fiber, with an LC interface and reach of up to 100 km. Cisco description: ONS SONET/SDH SFP. Cisco IOS XE, NX-OS, IOS XR and ONS software read the Cisco coding at insertion, so a genuine module avoids 'unsupported transceiver' messages. Typical uses: OC-3 / STM-1 SONET/SDH and optical service-channel links on Cisco ONS 15454 MSTP / NCS 2000, NCS 1000 and NCS 4000 optical-transport cards.
- 155 Mbps OC-3/STM-1 LR-2 up to 100 km
- Genuine Cisco part for Cisco ONS 15454 MSTP / NCS 2000
- ONS SONET/SDH SFP
- LC connector · Single-mode fiber
- Genuine OEM part · GST invoice · pan-India dispatch
ONS-SI-155-L2: frequently asked questions
What is the Cisco ONS-SI-155-L2?
The ONS-SI-155-L2 is an SFP OC-3/STM-1 LR-2 module for 155 Mbps SONET/SDH links. It is used for OC-3 / STM-1 SONET/SDH and optical service-channel links on Cisco ONS 15454 MSTP / NCS 2000, NCS 1000 and NCS 4000 optical-transport cards.
What is the maximum distance of the ONS-SI-155-L2?
Cisco documentation lists the ONS-SI-155-L2 for 100km.
Which fiber and connector does the ONS-SI-155-L2 need?
The ONS-SI-155-L2 uses an LC connector on single-mode fiber (OS2). Wavelength: 1550 nm. Both ends of the link must use the same optical standard.
Which Cisco devices support the ONS-SI-155-L2?
The ONS-SI-155-L2 is documented for Cisco ONS 15454 MSTP / NCS 2000, NCS 1000 and NCS 4000 optical-transport cards. Support depends on the exact chassis, line card and software release; send us your device model and release and we confirm it against Cisco's documentation before dispatch.
Is your ONS-SI-155-L2 genuine Cisco?
Yes. Next Gen Networks supplies original Cisco parts, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch and we share serial numbers on request so you can verify them in 'show inventory' / the transceiver page. If you want a lower-cost Cisco-coded compatible module for non-critical links, ask us and we quote both options.
What is the ONS-SI-155-L2 price in India and how do I order?
The Cisco ONS-SI-155-L2 price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in and we reply with a GST quote.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
Cisco_ONS-SI-155-L2_Datasheet_NextGenNetworks.pdf
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