What is the Cisco GLC-LH-SM-DDI?
The Cisco GLC-LH-SM-DDI is a network/telecom equipment component, listed by the manufacturer as "1.25G SMF 1310NM 20KM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

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Part Overview
Manufactured by Cisco, the GLC-LH-SM-DDI (1.25G SMF 1310NM 20KM) is a network/telecom equipment component. Circular Telecom sources, tests, and resells surplus and refurbished Cisco equipment like this as part of a lower-carbon alternative to new procurement.
Common Questions
The Cisco GLC-LH-SM-DDI is a network/telecom equipment component, listed by the manufacturer as "1.25G SMF 1310NM 20KM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Cisco network equipment, including parts such as the GLC-LH-SM-DDI, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue