WoosCalling is a data-less international calling app that helps you save up to 90% costs. It allows you to have all the PBX features on your mobile phone and it works well with all Smart phones, PBX and Centrex systems.
WoosCalling allows you to call the usual way by making your phone an extension of the PBX and it takes control over how each call is optimally connected – direct calling, call through, call back, or mobile VoIP. It provides switching features and presence management. Configuration and deployment of clients (OTA) is easily managed through a powerful provisioning system. It offers flexibility and robustness by leveraging Amazon EC2 cloud computing services.