Data Line Protection
RJ-11 Modem/Fax protection,RJ-11 Modem/Fax protection (four wire dual line),RJ-11 Modem/Fax protection (two wire single line),RJ-11 Modem/Fax/DSL protection (four wire dual line),RJ-11 Modem/Fax/DSL protection (two wire single line),RJ-45 Modem/Fax protection (four wire dual line),RJ-45 Modem/Fax protection (two wire single line),RJ-45 Modem/Fax/DSL protection (four wire dual line)