The G.792 codec license for the 2N® IP and SIP Speaker models. The licenses are generated by 2N® according to the serial number of the intercom. After you have ordered your license, you must provide the serial number of your intercom to Securigo who will request the 2N® license key on your behalf. The license itself comes in the form of an alphanumeric chain, so it can be easily sent by email and copied and pasted into the intercom. 2N® Licenses are not limited in time; Once purchased, your license will be active for a lifetime without applying the current annual fees.