Disclosed in some examples are methods, systems, and machine-readable mediums that assign a same identifier to a plurality of a user's communication devices. A communication server alerts only one device of the plurality of communication devices at a time in response to a communication establishment request from a calling communication device directed to the identifier. If the user fails to answer the alert, another device is chosen and alerted according to a particular sequence of devices until the user either answers or until all devices (or a determined subset of devices) have been tried. In some examples, the communication devices are reachable by the communication service via an alternative address known to the communication server, such as an Internet Protocol (IP) address.