What is DSL,ADSL and SDSL

DSL is the abbreviation of Digital Subscriber Link.

ADSL and SDSL are two parts of DSL

ADSL - Asymmetric DSL. where the upload/upstream is always lesser than dowload/downstream.

Example:

BSNL offer 2 Mbps downstream and 512 kbps upstream.

SDSL - Symmetric DSL. where the Upload/Upstream = Download/Downstream

Example:

Airtel offers 256kbps downstream/256 kbps upstream.

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