5 Regulations and safety notices22English Your 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.Notice for AustraliaFor safety reasons, only connect headsets with a telecommunicationscompliance label. This includes customer equipment previously labelledpermitted or certified.Notice for New Zealand1 The grant of a Telepermit for any item of terminal equipment indicatesonly that Telecom has accepted that the item complies with minimumconditions for connection to its network. It indicates no endorsement ofthe product by Telecom, nor does it provide any sort of warranty. Aboveall, it provides no assurance that any item will work correctly in all respectswith another item of Telepermitted equipment of a different make ormodel, nor does it imply that any product is compatible with all ofTelecom's network services.2 This equipment is not capable, under all operating conditions, of correctoperation at the higher speeds for which it is designed. Telecom will acceptno responsibility should difficulties arise in such circumstances.3 Some parameters required for compliance with Telecom's Telepermitrequirements are dependent on the equipment (PC) associated with thisdevice. The associated equipment shall be set to operate within thefollowing limits for compliance with Telecom's Specifications: