1. Open Fax Voip FSP Control Panel.
2. Click VOIP in TreeView, then click SIP, then click Registrations.
3. To change the preference order for SIP Registrations use Move Up and Move Down commands. One of the SIP Registrations entries should be selected.
4. To remove one or more SIP Registrations, select the entries, then click Delete.
5. Click <Apply> button to save modified settings for SIP Registrations. All the changes are applied immediately.