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-   -   USB to Serial Converter on Serial Modem (https://www.linuxquestions.org/questions/linux-general-1/usb-to-serial-converter-on-serial-modem-357414/)

bongski55 08-26-2005 11:43 PM

USB to Serial Converter on Serial Modem
 
How do I set the USB to Serial Converter to recognize a serial modem? I know that the converter is recognized because when I try to open USB View it is displayed correctly as "prolific usb to serial controller".I even tried to transfer the connection between the 3 usb ports I have and it also is recognized on all 3.
when I connect a serial modem the modem does not work.I do not know how to configure it to be "seen" as connected to the converter.

PLease help me!

FreeThinkerJim 08-27-2005 02:12 AM

Maybe the kenel module isn't loaded. In the lsmod output you should see a module named pl2303. If it's not there try this command as root:

Code:

modprobe pl2303

bongski55 08-27-2005 03:44 AM

Yes I did that.and in addition "modprobe usbserial".no effect at all.It is even listed when I do lsmod. But when I try to use kppp the modem is not responding.It says modem ready but there are no lights indicating activity.
Then I removed the modem from the usb to serial converter.It still says "modem ready" so it is not detecting the modem itself but instead it is detecting the converter circuit as a modem.
I confirmed this when I disconnected the usb to serial conv.The "modem ready" signal disappeared.I get a "unable to query modem".
the usb to serial converter works perfectly on xp BTW.

bongski55 08-29-2005 10:04 AM

Solved!

ln -b /dev/ttyUSB0 /dev/modem


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