1.1 Before Operating the Telephones12 User Manual1.1 Before Operating the Telephones1.1.1 Before Operating the TelephonesWhat Kind of Telephone Can Be Used?You can use a single line telephone (SLT), such as a rotary pulse telephone or aPanasonic proprietary telephone (PT) such as the KX-T7735. You can also use aPanasonic Portable Station (PS), e.g., KX-TD7690. Use the feature depending on thetelephone you are using. If you are using a Panasonic proprietary telephone with aspecial feature button such as or a display (Display PT) or both, you can follow theoperation with the button or display messages for easy programming.If you use a large display telephone (e.g., KX-T7735), you can follow the displayedmessages to use the features. If your telephone does not have feature buttons and/or adisplay, you may operate the PBX by entering a feature number instead. Follow theoperation for your type of telephone.If you use a Console, you can use the buttons on the Console as the buttons on theconnected proprietary telephone.Portable Station (PS) RegistrationYou must register your PS in the PBX and determine its extension number before initialuse. For PS registration, consult your dealer.Feature NumbersTo use certain features, you need to enter specified feature numbers (and an additionalparameter, if required).There are two types of feature numbers as follows:• Flexible feature number• Fixed feature numberFixed feature numbers cannot be changed. However, you can change the flexiblenumbers to other numbers for easier use. If you want to change the numbers, consultyour dealer. In this manual, the default numbers (factory installed) are used foroperations.A flexible number is shown as (half-shaded key). Use the new programmed numberif you have changed the feature number. Write the new number in the "Feature NumberTable" (Appendix).• If you use a Panasonicproprietary telephone whichdoes not have feature buttons,you may change one of theunused flexible buttons to afeature button. Refer to " 3.1.3Customizing the Buttons ".