Appendix A: Regulations and safety notices16Your telephone company may make changes in its facilities, equipment,operations, or procedures that could affect the proper functioning of yourequipment. If they do, you will be notified in advance to give you anopportunity to maintain uninterrupted telephone service.If this equipment should fail to operate properly, disconnect the equipmentfrom the phone line to determine if it is causing the problem. If the problem iswith the equipment, discontinue use and contact your dealer or vendor.Caution: To reduce the risk of fire, use only No. 26 AWG or largerUL Listed or CSA Certified Telecommunication Line Cord.TBR 21This equipment has been approved [Council Decision 98/482/EC - "TBR 21"] forsingle terminal connection to the Public Switched Telephone Network (PSTN).However, due to differences between the individual PSTNs provided in differentcountries, the approval does not, of itself, give an unconditional assurance ofsuccessful operation on every PSTN termination point. In the event of problems,you should contact your equipment supplier in the first instance.List of applicable countriesEU member states as of May 2004 are: Belgium, Denmark, Germany, Greece,Spain, France, Ireland, Italy, Luxembourg, the Netherlands, Austria, Portugal,Finland, Sweden, United Kingdom Estonia, Latvia, Lithuania, Poland, Hungary,Czech Republic, Slovak Republic, Slovenia, Cyprus and Malta. Usage allowed inthe countries of European Union, as well as Norway, Switzerland, Iceland andLiechtenstein. This device must be used in strict accordance with the regulationsand constraints in the country of use. For further information, please contactlocal office in the country of use.Notice for AustraliaFor safety reasons, only connect headsets with a telecommunicationscompliance label. This includes customer equipment previously labelledpermitted or certified.