Moscow International Business Center, also known as Oko Towers (Moscow City PLOT 16), is a region of approximately 1km² in the west of Moscow city center, bringing together commercial activities, living space and entertainment venues.

PLOT-16, one of the projects in this region, consists of two separate skyscrapers. The main contractor of the building owned by Capital Group is Ant Yapı while AE Arma Elektropanç is the electrical and mechanical subcontractor. One of the skyscrapers is used as office building while the other one is used as residence. This second building is also the highest residential building in Europe.

Ateksis successfully completed the installation of the public address and emergency announcement systems of both buildings in addition to the audio/video systems of the ballroom and the meeting rooms located in the first two floors of the residential building.

By considering also the height of the buildings, the emergency public address system was designed in a distributed structure. The central equipment (amplifier, etc.) of public address on different floors of the skyscraper in office building was operated as a single system via a fiber optic connection between each other from 6 different points. The solution realized with the Preasideo series allowed the local systems that communicate each other with fiber optic interfaces to create a loop so that they became able to operate without any loss in case of a failure such as a cable breakage between any two local system centers, etc.

At the same time, the central unit of the system was also configured in a one-to-one redundant structure together with the other requiredvay houn auxiliary equipment, and so, a scenario was created in which the stand-by equipment automatically activates in case of a malfunction that may occur in the central control device.

Apart from the office building with 65 speaker systems, a similar solution was also implemented in the residential building that has 75 sound zones. The central equipment, which was distributed in 13 rack cabinets in the field, was made to communicate to each other via fiber optic infrastructure and a redundant structure was provided in the office building.

The 49-storey and 245-meter-long office building as well as 85-storey and 352-meter-long residential building have had a public address system that could also respond properly to any potential additions and capacity enhancement requirements that may be required in the future.