Incoming data that is put on a single carrier and then transmitted down a phone line. The carrier itself is suppressed before transmission (it contains no information, and can be reconstructed at the receiver), hence the adjective "carrier-less."

Carrier-less Amplitude and Phase Modulation. A modulation technique used in some ADSL modems in which the transmit and receive signals are modulated into two frequency bands. Also see ADSL. Compare with DMT.

Carrierless Amplitude and Phase Modulation. A protocol (or standard) for transmitting data over a DSL line. CAP was used by Qwest until mid-2001, when they switched to DMT for all new and upgraded DSL lines.

Carrierless Amplitude Phase Modulation. A two dimensional line code used in ADSL.

Carrierless Amplitude Modulation/Phase Modulation. A possible technology used in ADSL. Current standards put emphasis on DMT technology.

Carrierless amplitude modulation/phase modulation. An encoding method used by modems in some DSL equipment. For example, the SLC 8CAP module in the Cisco 6200 and some CPE devices use CAP. See also DMT.

Carrierless Amplitude A version of QAM in which incoming data modulates a single carrier that is then transmitted down a telephone line. The carrier itself is suppressed before transmission (it contains no information, and can be reconstructed at the receiver), hence the adjective "carrierless."

Carrierless Amplitude/Phase modulation. A two-dimensional passband line code derived from QAM.

Modulation method used by modems and DSL equipment. Based on QAM. Signals modulate two wideband signals using passband modulation. CAP permits two to nine bits per frequency cycle.

Carrierless Amplitude Phase. A proprietary ADSL line encoding technique, that is (or was) in competition with "DMT". DMT has won the standards battle. CAP and DMT modems are not compatible with each other.

Carrier-less Amplitude/Phase (CAP) modulation; incoming data modulates a single carrier that is then transmitted down a telephone line. The carrier itself is suppressed before transmission (it contains no information, and can be reconstructed at the receiver), hence the adjective “carrier-less.” CAP and DMT are two modulation systems currently on the market for ADSL.

(carrierless amplitude/phase modulation) - the original ADSL modulation approach in which the signal frequency range is divided into voice (0-4 KHz), upstream data, and downstream data. DMT (discrete multitone) is now the preferred modulation alternative over CAP.

Carrier Amplitude/Phase modulation, associated with xDSL technologies.