One subscription allows you to monitor one PBX server. If you administer multiple PBXs and you want to monitor or manage them from Issabel Network, you need a subscription for each server.
Currently not, you cannot license individual addons. The subscription grants you a license to use all of our modules during the lifetime of your subscription.
First of all, you need to install the “Issabel License” addon, you can do that from the Addons menu in your Issabel System. Once installed, you will see a new menu entry under Addons named “Issabel License”. You can enter your activation code on the “Register Addon License button”. Once the license is activated, you will be able to install all of the modules from the Addons menu, and you will be able to setup alerts and administrate your server from My Issabel Portal