As long as there have been telephones and charges for conducting calls, there has been toll fraud. We're serious about VoIP security, especially when it comes to preventing toll fraud. So that can avoid paying for unnecessary charges.
When you are away and no one is around the phone system then toll fraud attacks tend to occur. Toll fraud is a fraudulent attempt by a hacker to gain unlawful remote access to a phone system, these are very organized attacks from an automated remote server. Once the attacker has the access to the phone system then the fraudulent calls are connected and your business may end up paying for these charges. Don't be too late, avoid being part of these attacks and use SL2100 phone system, which will monitor for these types of activities and also prevents it.