This thesis has been conducted at the Swedish Defense Materiel Administration (FMV) on the department of mobile command center with supervised by ÅF. FMV Mobile Command centers main task is to integrate communication systems into Swedish Armed Forces (FM) vehicle systems. FMV has conducted a new radio system that will be integrated in FM. In communications systems various interfaces as mounting interface and connections interface frequent occurs. A mounting interface is an interface were the radio is mounted into a mounting frame or matching, connection interface is the cables and contacts or interfaces similar. During the procurement of the new radio system no requirements were written in the specification that it should fit in the existing mounting interface called mounting frame 42/48. Nor did the connection interfaces stated requirements in detail. The problem formulation of this thesis reads; How is it possible for FMV to work with integration of the new communications system in FM vehicles to create the best conditions, inside the boundaries that is given for this thesis? To get an understanding how integration can be better in FMV, questions were formulated from FMV, which are underlying the further work. A good foundation for the analysis are made from the feasibility on how a specification is written in FM, which laws that would have an effect for public authority and which methods and manuals that is available to aid. Interviews are then conducted with staff from FMV and with co-workers on the concept plant in Enköping, a lot of the tryouts of the new communication systems are done. Four different mounting system concepts on how the integrations can be done are evaluated and analyzed to get to a standing point. The conclusion from the analyze of the mounting frame concepts is that an updated version of the existing mounting frame could be the best. With the addition that the new acquired mounting frame also should have the potential to mount older radio systems. A mounting frame adjusts for the new radio system at the same time as the older fits. In this conclusion recommendations are presented on what FMV could work on to achieve better conditions for the integrations of communications systems. Conclusions that the start of a project is the most important factor, for the whole project to be made. The importance of the knowledge of a change late in a project is much more expensive than early in a project and the project participants have easier to get a clear picture if it is a good startup of a project. To find a common connection interface for the radio systems was not seen as a solution. Instead it is proposed to work with standards where it is possible and detail specifications where it is needed. ISRN UTH-