how a phone mapped to a particular /dev/ttyUSBX ?

[Jon Berg]

Hi,

Perhaps a stupid question about linux.

I was just wondering how the a phone is mapped to a particular
/dev/ttyUSB0 -1 -2 -3 etc. ?

It is connected with CA-42.

Is it correct that it gets mapped the order it was first connected and
then stores the id of the usb device somewhere?

Is it safe to assume the a device will be connected and have the same
/dev/ttyUSB0 number if you connect more devices, or disconnect some or
rearrange what is connected?


Regards,
Jon.