Brother P'9981 User Manual page 152

For protection against the risk of electrical shock, always
disconnect all cables from the wall outlet before servicing,
modifying or installing the equipment.
This equipment may not be used on coin service lines provided
by the telephone company or connected to party lines.
Brother cannot accept any financial or other responsibilities
that may be the result of your use of this information, including
direct, special or consequential damages. There are no
warranties extended or granted by this document.
11 - 12 IMPORTANT INFORMATION