PART 5. GENERAL USER INFORMATION5.1 RADIO FREQUENCY INTERFERENCEWARNING: This equipment has been tested and found to comply with the limits for a Class A digital device, pur-suant to Part 15 of the FCC rules.These limits are designed to provide reasonable protection against harmful inter-ference when the equipment is operated in a commercial environment. This equipment generates, uses and canradiate radio frequency energy. If not installed and operated in accordance with the instruction manual, it maycause interference with radio communications. Operation of this equipment in a residential area is likely to causeharmful interference in which case the user will be required to correct the interference at his own expense.The following measures can be tried:1. Reorient the receiving antenna.2. Relocate the telephone with respect to the receiver.3. Move the telephone equipment away from the receiver.4. Plug the Key Service Unit into a different AC outlet so that the KSU and receiver are on different circuits.5.2 FCC REQUIREMENTSThe OfficeServ 500 electronic telephone system complies with Part 68 of the Federal CommunicationsCommission Rules and Regulations.UNAUTHORIZED MODIFICATIONSAny changes or modifications performed on this equipment that are not expressly approved in writing by SAM-SUNG TELECOMMUNICATIONS AMERICA could cause noncompliance with the FCC rules and void the user’sauthority to operate the equipment.NOTE: Allowing this equipment to be operated in such a manner as to not provide for proper answer supervisionis a violation of Part 68 of the FCC’s rules.NOTIFICATION TO TELEPHONE COMPANYBefore connecting the OfficeServ 500 system to the telephone network, the telephone company may request thefollowing information:• Your telephone number or all numbers that will be connected to the OfficeServ 500 system.• FCC Registration Numbers:Key System—Fully Protected A3LKOR-43066-KF-EMulti-Function (Hybrid)—Fully Protected A3KLOR-43065-MF-E• Ringer Equivalence Number 0.5 B for TRK-B1• Ringer Equivalence Number 1.6 B for TRK-C1The OfficeServ 500 may be configured as a key system or a hybrid system. Depending on the method of opera-tion, the appropriate FCC number must be given to the telephone company. Certain features such as pooledaccess by button or dial access, LCR, off premise extensions and tie lines may require the hybrid registration.Check with the local telephone company providing the service if you are in doubt. It is the customer’s responsi-bility to comply with local telephone company tariffs.5.1