I am pretty sure there's an option in your BIOS to turn it off. If its annoying to you then just turn it off. Just try to find it as most BIOS menu is different from one another.
Are you asking for a VoIP service or VoIP device?
You mentioned your friends Vonage account expired so I guess you are looking for a VoIP service. Well your friend can try Onesuite, a prepaid long distance with VoIP service. If your friend can or has an unlocked Vonage ATA device, then he can...