mandatory, unique identifier for the action, used by blf_item definitions. One id with the reserved name "primary" should be used for each contact, to designate the primary action, that occurs when no other action is matched.
Magic action ids "intercom," "monitor," "sendtovm" and "dialvmdial_vm" will result in special icons displayed for the action.
optional, number, e.g. 1234, or URI like sip:host or sip:user@host, to be passed to the phone application and dialed for this action
optional, number to be prepended before dial, where be passed to the phone application and dialed for this action
optional, identifier for an application to which events or functions are sent. The identifier should be either one of the phone default applications (contacts, voicemail, parking, status, queues) or should be the identifier of a user-loaded custom application.
mandatory, pertinent information about the number for the Contacts application, e.g. SIP Extension, Cell; appears to the left of the number or application within the contact's information screen
mandatory, a name for this action, used as its language key within applications, e.g. custom applications; appears to the right, in square brackets, of the number or application within the contact's information screen