Hello Sir,
I am writing device driver for an ineternet telephony card. It
can connect four channels directly from PSTN. So i am taking the four
channels as /dev/line1, /dev/line2, /dev/line3, /dev/line4. But in the DSP
software of the card it has only one signalling channel. I have no idea
about how to manage this one signalling channel among four voice channels.
Actual doubt i have is if we take four device files with same major number
and different minor numbers how the driver behaves? That is linux will
take four different device drivers for the four device files differently
or single device file for all the four. And one more problem is all these
device files /dev/line1, /dev/line2 ... use same memory in kernel or
different memory for each device file?
I am new to this device drivers, I will be gratelful if you can help me.
Thanks in advance,
Saif.
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