European Telecommunications Installation, Maintenance, Support noun /'tɛləkəˌmjunəˈkeɪʃ(ə)ns/ ɪnstəˈleɪʃ(ə)n/ meɪntənəns/ səˈpɔrt'/ Hughes installers have received intensive, hands-on training in system operation, installation, and maintenance, to ensure business networks run optimally and perform at their best. Hughes offers around-the-clock support to help mitigate any problems businesses throughout Europe may run into.