SFP, QSFP, OSFP – Distance Classification Explained (SR, LR, ER, ZR, DR, FR)
In modern fiber-optic networking, choosing the correct optical module is very important for performance, distance, and budget planning. At D-TECH Trading Nepal, we supply high-quality SFP, QSFP, QSFP-DD and OSFP modules for ISPs, enterprises, and data centers across Nepal.
Many customers get confused about distance classifications like SR, LR, ER, ZR, DR, FR. Let’s clearly understand what they mean.
