Very flexible call management is achieved by a method for handling a call setup request from A party to a B party. A machine-readable medium having embodied thereon instructions for performing such methods and techniques is also included, as well as an example system for implementation. The weakening device includes a blowing device and a suction device. When a first application and respective first migrateable socket are migrated from a first host device to a second host device, at least one association link established prior to the migration may be used to re-established peer-to-peer communications as part of the migration event.