Lexmark X750e MFP X4500 Option Setup Guide - Page 29

CAUTION! Do not make electrical ground connections yourself. Contact the appropriate electric inspection authority, or electrician, as appropriate. Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. The REN of this device is 0.4. The REN assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination of an interface may consist of any combination of devices subject only to the requirement that the sum of the RENs of all the devices does not exceed 5. This equipment uses the following jack: CA11A. Network compatibility notices This equipment has been designed, tested, and found to be compliant with the European technical standard TBR 21 for pan-European single terminal connection to the Public Switched Telephone Network (PSTN). This applies to all X4500 MFP Options which bear the following mark: This equipment is designed to work with PSTN networks that accept analog signals. However, due to differences between the individual PSTNs provided in different countries, the TBR 21 certification does not, in itself, give an unconditional assurance of successful operation on every PSTN network termination point. In the event of problems, you should contact your equipment supplier. Lexmark does not currently know of interoperating difficulties for the following countries: Austria France Greece Portugal Spain Belgium Germany Iceland Sweden Norway Denmark Finland Luxemburg Netherlands Ireland Italy United Kingdom Switzerland 24 Notices