The team of a security company often changes the establishment it is protecting several times a day. Although the team may be connected with their own network in this case, the employees of the establishment on site are not. The Minicall 12 mobile assistance call system supports the team from the security company on each job easily and straightforwardly. If, for example, a discotheque requires security, the team arrives and distributes the alarms to the employees in the various bars and dance floors. If a dangerous situation comes about, such as a fight, a call for assistance is triggered immediately. Via the base station and portable receivers, the security team on the ground is informed where assistance is required and is able to intervene immediately.