Avaya one-X® Mobile enables end-users to access their enterprise communications from a wide selection of mobile devices, including high-end smart phones and tablets. A choice of one-X Mobile clients is available for popular platforms including Apple iPhone, Google Android, RIM BlackBerry and Nokia/Symbian. one-X Mobile provides users with a single number/single identity for both inbound and outbound calls, even if they are using a personal device, and allows calls to be handed-off between deskphone/client and mobile client (bi-directionally). Through integration with Avaya one-X® Client Enablement Services, one-X Mobile users have access to a broad range of Unified Communications capabilities including visual voice mail, aggregated presence, and synchronized call logs and contacts. The Avaya one-X® Mobile Lite client provides a streamlined feature set through a graphical interface for accessing Avaya Extension to Cellular features. Designed for the Apple iPhone, this client offers a range of mobility features without requiring the deployment of a client server. The Avaya one-X® Mobile SIP for iOS client provides users access their enterprise communications (SIP only) from Apple iOS devices including iPhone, iPod Touch, and iPad via a WLAN or cellular data network.