It's difficult, but you can program your LYNX Plus L3000 security system using Total Connect.
Total Connect lets users remotely arm/disarm the panel, or check in on the status on their system, but it doesn't allow remote programming of the system unless you have the Total Connect virtual keypad. The virtual keypad links to the L3000 via ECP data communication and lets users make programming changes to their L3000 security system. While programming with the virtual keypad is possible, it isn't recommended. If your internet connection fails during programming, you can't be sure whether your system changes have been saved or not. It's safer to perform all system programming on your L3000 keypad.
LYNX Touch L5100
LYNX Touch L5100-SIA