1G SFP GLC-LH-SM-20 20km 1310nm Duplex LC/UPC Module, Cisco

The 1G SFP GLC-LH-SM-20 20km 1310nm Duplex LC/UPC Module, Cisco is a SFP optical transceiver delivering 1.25Gbps over SMF. Operating at 1310nm with a Duplex LC/UPC interface, it reaches 20km and is compliant with SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in enterprise access, campus, telecom edge and industrial network environments.

Product Highlights

• SFP form factor, 1.25Gbps data rate
• Wavelength: 1310nm
• Connector: Duplex LC/UPC
• Reach: up to 20km
• Fiber media: SMF
• DDM/DOM: Supported

In enterprise access, campus, telecom edge and industrial network environments, the 1G SFP GLC-LH-SM-20 20km 1310nm Duplex LC/UPC Module, Cisco delivers 1.25Gbps transmission over SMF with a reach of 20km. The Duplex LC/UPC interface and 1310nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. For networks standardized on Cisco hardware, it is a drop-in equivalent of the GLC-LH-SM-20.

Compliance: SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z. For projects standardized on Cisco hardware, this product replaces the GLC-LH-SM-20 directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.

Order this product as SFP1G-ELX-31. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.

Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.

Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.

Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.

Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.