Cisco ONS-SE-155-1510 SFP OC-3/STM-1 CWDM 1510nm EXT Transceiver - Refurbished
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.

Cisco ONS-SE-155-1510 SFP OC-3/STM-1 CWDM 1510nm Extended Reach Transceiver
Tested to factory specification. Backed by 25 years of enterprise trust.
The Cisco ONS-SE-155-1510 is a high-performance SFP (Small Form-factor Pluggable) optical transceiver designed for OC-3/STM-1 SONET/SDH applications. Operating at the 1510nm CWDM (Coarse Wavelength Division Multiplexing) wavelength with extended reach capability, this transceiver is ideal for long-haul, high-density optical networking deployments in enterprise and service provider environments. This unit is professionally refurbished and fully tested to meet original Cisco factory specifications.
Product Highlights
- Manufacturer Part Number (MPN): ONS-SE-155-1510
- Vendor: Cisco
- Product Type: Optics / SFP Transceiver
- Standard: OC-3 / STM-1 (155 Mbps)
- Wavelength: 1510nm CWDM
- Reach: Extended (EXT)
- Form Factor: SFP (Small Form-factor Pluggable)
- Condition: Professionally Refurbished — Tested to Factory Specification
Why Choose a WhaleyComm Refurbished Unit?
Every refurbished transceiver sold by WhaleyComm undergoes rigorous inspection and testing to ensure it performs to original manufacturer specifications. You get enterprise-grade hardware at a fraction of the cost of new — without sacrificing reliability or performance. With over 25 years of experience and more than 5,000 satisfied customers, WhaleyComm is a trusted name in refurbished networking equipment.
Lifetime Warranty
No Time Limits. No Questions. Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. Simple as that. 25 years, 5,000+ customers — we stand behind every product we sell.
Shipping & Returns
- Shipping: Orders ship within 1–2 business days.
- Returns: Contact our support team for DOA (Dead on Arrival) or warranty-related issues. We make it right.
Compatible Applications
- Cisco ONS optical networking platforms
- SONET/SDH OC-3/STM-1 network deployments
- CWDM-based long-distance fiber optic links
- Enterprise WAN and service provider metro networks
WhaleyComm is not affiliated with Cisco Systems, Inc. Cisco and related marks are trademarks of Cisco Systems, Inc. This is a refurbished third-party unit.