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I wrote a Java application that connects to the serial port of the GSM modem. On Windows the serial ports have names like COM3, but in Linux Redhat 6.0 I had to switch to something like ttySx (X is number that came after S in /dev/ directory). When I plug my modem in to Linux there are no serial entries in /dev (just ttyUSBx), but on Windows it works fine. What am I doing wrong?

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Well, those (ttyUSB{0..2}) are the serial devices and are the ones you want your application to use.

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I used these (ttyUSB{0..2}) but it does not work either – danar jabbar Oct 3 '12 at 9:33
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Please update your question with information on how exactly it does not work (what, you're trying to do, what you're expecting and what you're seeing) – Stephane Chazelas Oct 3 '12 at 10:06

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