Call diversions are controlled by the user, typically via the phone system or a mobile. Each has its own nuances; however, the typical diversions are on busy, on no answer or according to set times. In the case of mobiles or landlines these can be programmed via the handset in most cases, otherwise your network provider may need to assist. If TMC Connect is hosting your number, then this can be managed by TMC Connect or self-managed via your TMC Connect web portal.