Call blocking Screenshot 80 - A call block rule Call blocking allows you to exercise control over the fax numbers that users can send faxes to. GFI FAXmaker checks the call block rules before each fax transmission, and will not send any faxes starting with numbers listed in the call-blocking list. This means that if you want to prevent certain users from making international fax transmissions, you only need to insert the international dial-out number (for example 00, 09 or 011). Alternatively, you can block specific fax numbers. To create a call blocking rule: 1. In the GFI FAXmaker configuration, Advanced ► Call blocking node, right-click and select ‘New’. Screenshot 81 - New call block entry 2. Key in the number that you want to block and click OK. 3. Select which users you wish to apply the rule to. 4. Click OK to create the rule.