Realization of a practical and integrated adaptive echo canceller applies in high speed full duplex Modem is proposed in this paper.

本文提出了一种实用、完整的自适应回波抵消器，可用于实现高速调制解调器的二线全双工传输。

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The iPhone features an integrated Web browser, tiltable 7.4-inch gray scale touchscreen, an e-mail client, a 56-kilobits-per-second modem, two phone jacks, a full duplex speaker phone, and a keyboard that slides under the phone to save space.

CNN: InfoGear upgrades phone of the future