I have been provided with a new phone by my company which features different setting options including voicemail setting. As default setting, you have the system voice recorded which plays (when non-answering the phone) and to which you can add your name (with your own voice) at the end of the default system voice message. The problem is that when I recorded my name, I hanged up because I couldn't do it properly (I was laughing....) and wanted to try later. But unfortunatly, the default voice system has disapeared. How can I reset the default voice system please?