134 www.gateway.comAppendix A: Safety, Regulatory, and Legal InformationUsers should make sure, for their own protection, that the electrical ground connections ofthe power utility, telephone lines, and internal metallic water pipe system, if present, areconnected together. This precaution may be particularly important in rural areas.The Ringer Equivalence Number (REN) assigned to each terminal device provides anindication of the maximum number of terminals allowed to be connected to a telephoneinterface. The termination on an interface may consist of any combination of devicessubject only to the requirement that the sum of the Ringer Equivalence Numbers of all thedevices does not exceed 5.Japanese NoticeJapanese Modem NoticeWarning To avoid electrical shock or equipment malfunction do notattempt to make electrical ground connections by yourself.Contact the appropriate inspection authority or anelectrician, as appropriate.
