Know your gear
All Avaya IP phones (including DECT and Wi-Fi phones) require an Avaya IP Endpoint license and will consume one instance of that license.
Licenses are consumed by each Avaya IP phone that registers with the system in the order that they register. The license is released if the phone unregisters. However, it is possible to reserve a license for particular phones in order to ensure that those phones always obtain a license first if available. This is done through the Reserve License setting of each IP extension.
Avaya IP phones without a license will still be able to register but will be limited to making emergency calls only (Dial Emergency short code calls). The associated user will be treated as if logged off and the phone will display No license available and Emergency Calls Only. If a license becomes available, it will be assigned to any unlicensed DECT handsets first and then to any other unlicensed Avaya IP phone in the order that the phones registered.
Licenses are consumed by each Avaya IP phone that registers with the system in the order that they register. The license is released if the phone unregisters. However, it is possible to reserve a license for particular phones in order to ensure that those phones always obtain a license first if available. This is done through the Reserve License setting of each IP extension.
Avaya IP phones without a license will still be able to register but will be limited to making emergency calls only (Dial Emergency short code calls). The associated user will be treated as if logged off and the phone will display No license available and Emergency Calls Only. If a license becomes available, it will be assigned to any unlicensed DECT handsets first and then to any other unlicensed Avaya IP phone in the order that the phones registered.