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K56flex
Last modified: Friday, January 04, 2002 

A technology developed by Lucent Technologies and Rockwell International for delivering data rates up to 56 Kbps over plain old telephone service (POTS). It was long believed that the maximum data transmission rate over copper telephone wires was 33.6 Kbps, but K56flex achieves higher rates by taking advantage of the fact that most phone switching stations are connected by high-speed digital lines. K56flex bypasses the normal digital-to-analog conversion and sends the digital data over the telephone wires directly to your modem where it is decoded.

Lucent and Rockwell have announced that future K56flex modems will conform to the new V.90 standard approved by the ITU. And users with older K56flex modems may upgrade their modems to support V.90.

While K56flex offers faster Internet access than normal modems, there are several caveats to using an K56flex modem:

1. The high speeds are available only with downstream traffic (e.g., data sent to your computer). Upstream traffic is delivered using normal techniques, with a maximum speed of 33.6 Kbps.

2. To connect to the Internet at K56flex speeds, your Internet Service Provider (ISP) must have a modem at the other end that supports V.90.

3. Even if your ISP supports V.90, you might not achieve maximum transmission rates due to noisy lines.

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For internet.com pages about K56flex . Also check out the following links!

Related Links

56K.COM - 56K modem home page 
Provides information and resources for the 56K owner and buyer. Offers newsflashes, a primer, upgrade and buyer's guides, modem initialization strings, drivers, and firmware updates.

Multi-Tech: Look Before You Leap
White paper from MultiTech Systems that analyzes the pros and cons of implementing 56K technology.

Rockwell's K56flex technology page
Offers overviews, FAQs, white papers, and news items regarding Rockwell's K56flex modem technology as well as information on supporting retail modem manufacturers and ISPs.

Yahoo!'s K56flex page
Yahoo!'s directory of K56flex.

related categories

Internet Access

Modems

Peripheral Devices

related terms

channel bonding

modem

V.90

X2


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