Description
The Cisco GLC-BX40-D-I is a 1000BASE-BX40 downstream SFP transceiver designed for long-range, single-fiber Gigabit Ethernet connectivity. Operating at a 1550nm wavelength with a reach of up to 40 kilometers, this module enables efficient bidirectional communication over a single strand of single-mode fiber, reducing fiber infrastructure costs.
Built for industrial environments, the GLC-BX40-D-I supports extended temperature operation and delivers reliable performance in harsh conditions. It pairs with a corresponding BX40 upstream SFP to provide stable, long-distance links for service provider networks, industrial Ethernet deployments, and enterprise access networks. Hot-swappable design and Digital Optical Monitoring (DOM) support simplify installation, monitoring, and ongoing maintenance.
| Specification | Details |
|---|---|
| Manufacturer | Cisco |
| SKU | GLC-BX40-D-I |
| Transceiver Type | SFP (Small Form-Factor Pluggable) |
| Ethernet Standard | 1000BASE-BX40 |
| Data Rate | 1 Gbps |
| Fiber Type | Single-Mode Fiber (SMF) |
| Fiber Strand | Single-fiber (BiDi) |
| Wavelength | 1550 nm (Transmit) |
| Maximum Distance | Up to 40 km |
| Connector Type | LC |
| Direction | Downstream (Pairs with BX40-U) |
| Digital Optical Monitoring | Supported |
| Form Factor | Hot-swappable SFP |
| Operating Temperature | Industrial-rated |
| Typical Use Cases | Long-haul access, industrial networks, service provider links |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
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- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
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