On Tue, Apr 30, 2002 at 05:40:10PM +0800, Andres Montiel wrote: > Tanong: puwede ba ang US Robotics internal modem sa Linux? Hindi ba ito > magkakaproblema? Di ba ilag ang Linux sa internal modems?
It depends. There are modems that are *real* modems that contain all of the dedicated (and expensive) DSP hardware needed for an actual modem's operation. All external serial modems and a few internal modems (I believe this includes some 3Com/USR models) are of this type. Linux has no problem with them. However, the vast majority of internal modems (and many internal modems created by 3Com/US Robotics I suspect) are "soft" modems that don't have this circuitry and for the most part consist of only a UART and analog to digital and digital to analog circuits where your computer's CPU fits in between, doing the DSP work. These kinds of modems (which characterize some 99% of all internal modems you find in typical computer store) are usually almost completely worthless under any operating system not supported by the manufacturer, which probably means only Windows. In short, not all internal modems are worthless with Linux. The vast majority, however, are Winmodems that require non-trivial drivers that simply do not exist under other operating systems. Besides, a typical soft modem driver on a 56Kbps/V.90 connection would probably consume half the processing power of an old model Pentium II. Any excessive loading on the CPU of a machine with a Winmodem would likely result in a significant bandwidth drop, if not a broken connection. -- Rafael R. Sevilla <dido at imperium dot ph> +63(2)8183151 Software Developer, Imperium Technology Inc. +63(917)4458925 _ Philippine Linux Users Group. Web site and archives at http://plug.linux.org.ph To leave: send "unsubscribe" in the body to [EMAIL PROTECTED] To subscribe to the Linux Newbies' List: send "subscribe" in the body to [EMAIL PROTECTED]
