DSL and Networks Information

Transmission methods vary by market, region, carrier, and equipment.

* 2B1Q: Two-binary, one-quaternary, used for IDSL and HDSL
* CAP: Carrierless Amplitude Phase Modulation - deprecated in 1996 for ADSL, used for HDSL
* DMT: Discrete multitone modulation, the most numerous kind, otherwise known as OFDM
* OFDM: Orthogonal frequency-division multiplexing

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