Mission-Systole | Communication Agency Brussels | Cross-Media Communicators. From a simple mission to complex campaigns through traditional, digital and social media iPad detailing, Social Media, e-Reputation, Community Management, Website creation and Healthcare communication. Mission-Systole combines the flexibility of a small agency with the expertise of a bigger brand, without the big agency fee, and as such is the perfect partner for all your communication needs. The agency exists to offer clients a large range of personalized and professional services in any field of communication as required by their business. Our expertise lies in developing ‘Cross Communication' for both national and/or international projects.