Description of the Avaya 1603SW IP The Avaya 1603SW IP is designed for the everyday user. It is good for use in common locations such as; Drop-in desks, stockrooms, officies, and lobbies. The user of the Avaya 1603SW IP can be employees, visitors, or even customers. Sales staff, and cubical worker who require a quality phone and rely on several forms of communication will fill the telephony needs of the everyday basic user.