30-1299-03 Cisco 1000BASE-LX SFP | 1G LX SM 1310nm Transceiver

Cisco GE SFP LC Connector LX/LH 1000Base-LH 10Km Mini-GBIC Transceiver Part #: 30-1299-03,GLC-LH-SM

• Brand: Cisco
• Part #: 30-1299-03
• Model: Cisco GLC-LH-SM
• Specs:-
• ::Type: SFP (Small Form-factor Pluggable) transceiver.
• ::Data Rate: 1 Gbps (Gigabit Ethernet)
• ::Wavelength: 1310 nm
• ::Interface: SFP
• ::Standard: Compliant with the IEEE 802.3z 1000BASE-LX/LH standard.
• ::Connector: Duplex LC
• Cable Type & Distance:
• ::Single-Mode Fiber (SMF): Up to 10 km (6.2 miles)
• ::Multi-Mode Fiber (MMF): Up to 550 meters (1,804 feet). A mode conditioning patch cable may be required for optimal performance on some MMF links.
• Condition: New
• Warranty: 1 (one) year Tekmart Africa warranty
•  

INT1608251LST2025

**Eligible for immediate collection / shipping  upon order confirmation*

This SKU: 30-1299-03 is a Cisco part number; an internal or manufacturing part number for the Cisco GLC-LH-SM SFP (Small Form-factor Pluggable) transceiver module.

This module is a 1 Gigabit Ethernet transceiver that provides network connectivity over fiber optic cabling. It is a long-haul, long-wavelength SFP, which means it uses a 1310 nm wavelength laser.

They can also be used with multi-mode fiber for shorter distances, typically up to 550 meters.

Note that when used with legacy multi-mode fiber, a mode conditioning patch cable is often required to avoid signal distortion.

They are hot-swappable, which means they can be installed or replaced without having to power down the host device, minimizing network downtime.

The -03 suffix in the part number indicates a specific revision or manufacturing run, but for most purposes, it's functionally identical to the other revisions of the GLC-LH-SM, such as 30-1299-01 or 30-1299-02.

Please note on the  "GLC-LH-SMD" variant

Be aware of a very similar model, the GLC-LH-SMD. The "D" in the product name stands for Digital Diagnostic Monitoring (DDM). This feature allows network administrators to monitor real-time parameters of the SFP, such as:

• ::Optical output power
• ::Optical input power
• ::Temperature
• ::Laser bias current
• ::Transceiver voltage
•  

These older GLC-LH-SM model does not have this DDM capability, while the GLC-LH-SMD (and its modern equivalent, the SFP-1G-LH) does.

For most modern deployments, the DDM-enabled model is preferred for its enhanced monitoring and troubleshooting features.