Data leased line is a dataπγ § transmission service that uses optica≤'l fiber, digital microwave, and ope©ε∞n circuits, and uses γ> a digital transmission channel tΩ§ε<o transmit digital signal¥♣↑s. It can provide point-to-p" ≥oint and point-to-multipo×÷int transparent transmissλ®™ion of data leased circui ×ts for users to transmit d↑¥γ÷ata, images, Information such ↔♣as voice provides circu×↕∑±it transmission services wi>≥th a variety of rate£λ‍δs from 2Mbps to 2.5Gbpsγ&, and is generally used in in<&> tra-enterprise intranet networking.

Line classification:

Data lines can be divided into localγ÷← data lines, long-distance∏φ lines, and international long-dista↔δnce lines according to gα×≥£eographical areas.

According to the line‌×€↓ type, there are DDN, Frame RΩ±elay (FR), ATM, SDH, MSTP, Ether±$​net dedicated line, MPLS-VPN≥¶"≤, etc.