X2

(redirected from X-2)

X2

(protocol)
A proprietary modem standard developed by US Robotics for 56 kbps communications. Not taken up as widely as K56flex and will shortly be superseded by the official V.90 standard.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

V.90

An ITU standard (1998) for an analog modem that communicates at 56 Kbps downstream and 33.6 Kbps upstream. It was designed for ISPs and online services that are digitally attached to the telephone system via T1 and T3 circuits.

In practice, the downstream link is not faster than 45 Kbps in these PCM modems, so called because they use pulse code modulation downstream and standard V.34 upstream. Initially, two incompatible technologies competed in this arena: x2 from U.S. Robotics and K56Flex from Rockwell and Lucent. Such modems can be upgraded to V.90 if they contain software-upgradable memory chips. See V.92, V.34 and channel bonding.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Counsel Shoeb Alam told a bench of Justice AM Khanwilkar and Justice Indu Malhotra that Bhat had been provided the requisite security as per his entitlement (X-2 category).
The package comes with the original Final Fantasy X together with its sequel, Final Fantasy X-2. The first game follows the adventures of a group of pilgrims to save the land from a colossal threat.
And then there's the delicious lesbo-a-go-go that is Final Fantasy X-2. Yuna is looking for her man, but what about her two scantily clad sidekicks?
has added a dual BNC metal body connector to its line of X-2 connectors and accessories for RF, video and broadcast transmission.
("Square Enix U.S.A."), the publisher of Square Enix products in North America, has launched FINAL FANTASY X-2 for the PlayStation2 computer entertainment system to North American retailers.
2: When X-1 passes to X-2 on the left side, M-2 slides out of the comer to cover the receiver, while M-1 replaces him in the rectangle.
As the news has spread, quasiperiodic pulsations have also been reported in two long-known X-ray sources, Scorpio X-1 and Cygnus X-2. The GX5-1 group took a second look on April 29, 1985, and again found the quasiperiodic oscillations in that object.
x-2, South Eugene (Applegate, DeHaas, Bunting, Wiebe), 49.87.
SHOT PUT - x-1, Jon Michael Murray, Chu, 47-6 3/4 , x-2, Tyler West, Mar, 46-1.
x-2, La Pine (Christensen, Pajunen, Ebner, Russell), 51.3.
x-2, North Eugene (Alban, Christianson, Cross, James, Johnson) 43.29.
x-2, South Eugene (Taylor, Morray, Patton, Wright), 3:29.16.