The paper presents the design concept of the VoiceTRAN Communicator that integrates speech recognition, machine translation and text-to-speech synthesis using the DARPA Galaxy architecture. The aim of the project is to build a robust speech-to-speech translation communicator able to translate simple domain-specific sentences in the Slovenian-English language pair. The project represents a joint collaboration between several Slovenian research organizations that are active in human language technologies. We provide an overview of the task, describe the system architecture and individual servers. Further we describe the language resources that will be used and developed within the project. We conclude the paper with plans for evaluation of the VoiceTRAN Communicator.