udev

udev rules for creating IMEI- and IMSI-based symlinks of serial devices

This is an example of udev rules creating IMEI- and IMSI-based symlinks of serial devices. Symlinks are created in /dev/modem/by-imei and /dev/modem/by-imsi directories.

• IMEI - International Mobile Equipment Identity.
• IMSI - International Mobile Subscriber Identity.

Requirements

1. socat.

Installation

1. Copy 65-modem.rules file to /etc/udev/rules.d directory.

2. Copy read-modem-properties.sh file to /usr/lib/udev directory.

3. Reload udev rules:

   sudo udevadm control --reload
   sudo udevadm trigger

AT Commands

1. AT+CGSN - Request product serial number identification.
2. AT+CIMI - Request international mobile subscriber identity.

Links

• socat manual page.
• Arch Linux - udev.