Automatic Registration Service

The Automatic Registration Service is a generic name for a server that implements the Automatic Registration Server (ARS) features. With POP25 communications and with features such as Text Messaging, an ARS is responsible for device registration also known as Presence Notification (PN) and therefore may also be referred to as the Presence Notifier (PN). With Text Messaging, an ARS is responsible for Radio-User system registration therefore allowing for a particular user to be recognized as operating on a specific radio.