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> Curiosity question: > > If every application using the modem used '/dev/modem', would everything > work properly? If not, where is the breakdown? Is it that some > translate the link and some don't? Yes, it would all work, as long as every program accessing the device used the same device name. The lock file created in this case would be /var/lock/LCK..modem The problem only comes when there's more than one device file for a single device, which is why some folks with Linux delete the cuaX and modem devices.