Overview|Warranty, Regulatory Information, and Specifications 19Regulatory Information2 The following USOC jacks may be used with thisequipment: RJ11C.3 The REN is used to determine the quantity of deviceswhich may be connected to the telephone line. ExcessiveREN’s on the telephone line may result in the devices notringing in response to an emergency call. In most, but notall areas, the sum of the REN’s should not exceed five(5.0). To be certain of the number of devices that may beconnected to the line, as determined by the total REN’s,contact the telephone company to determine the maximumREN for your calling area.4 If the equipment causes harm to the telephone network,the telephone company will notify you in advance. But ifadvance notice isn’t practical, the telephone company willnotify the customer as soon as possible. Also, you will beadvised of your right to file a complaint with the FCC ifyou believe it is necessary.Federal Communications Commission(FCC) Requirements for End UsersThis device has been granted a registration number by theFederal Communications Commission, under Part 68 rulesand regulations for direct connection to the telephone lines. Inorder to comply with these FCC rules, the followinginstructions must be carefully read and applicable portionsfollowed completely.1 This equipment complies with Part 68 of FCC rules. Onthe back of the equipment is a label that contains, amongother information, the FCC registration number and ringerequivalence number (REN) for this equipment. Ifrequested, this information must be provided to thetelephone company.