The costs for a telephone system depend very much on the range of functions and above all on the size of the company. The more users a system has to process, the more complex its configuration and consequently the more expensive it is. The connection to other systems, the ability to scale and above all the speed of the line also affect the price. For small companies, the costs are at least about 200 euros. In return, they receive a high-performance router with system functions. End devices or a headset are then added and can cost several hundred euros depending on the equipment. Medium-sized companies have to estimate several thousand euros for the basic system and end devices. Operators of cloud-based telephone systems offer subscription models whose price depends on the desired scope of services.