24 Basic operationTo dial a call using the alphanumeric keys on a keypad micro-phone:1 Dial the number of the call using the keys to .If you are dialling a preset call number that is the same asa call to another radio, then you need to dial a leading 0.For example, dial 23# to call radio 23 and dial 023# forpreset call number 23.2 Press the or PTT key.The call details appear in the display. While the call isbeing setup, you can cancel the call by pressing the clearkey .Making a preset callThe preset calls programmed for your radio may include in-fleet calls and numbers to change to a conventional channelor group. They can also include out-of-fleet calls, calls toPABX extensions or PSTN numbers, the ability to change theoperating network, and MPT functions such as do not disturband call diversion. There may be up to 100 preset callsprogrammed. To make a preset call from your radio, you maybe able to either:■ use a programmed function key, or■ use one of the methods described in “Making a call” onpage 22.Using a function key to make a preset callPress the function key programmed to make the preset callyou want.The call details appear in the display. While the call is beingsetup, you can cancel the call by pressing the clear key .