Using the PhoneNumberValidator class
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Form id="contactForm"> <mx:FormItem id="homePhoneItem" label="Home Phone"> <mx:TextInput id="homePhoneInput" /> </mx:FormItem> <mx:FormItem id="cellPhoneItem" label="Cell Phone"> <mx:TextInput id="cellPhoneInput" /> </mx:FormItem> <mx:FormItem id="emailItem" label="Email"> <mx:TextInput id="emailInput" /> </mx:FormItem> </mx:Form> <mx:PhoneNumberValidator id="pnVHome" source="{homePhoneInput}" property="text" /> <mx:PhoneNumberValidator id="pnVCell" source="{cellPhoneInput}" property="text" /> <mx:EmailValidator id="emV" source="{emailInput}" property="text" /> </mx:Application>