Text that says "CST Awarded Royal Warrant" with the royal coat of arms logo displayed next to it with a brushed bronze call button being pressed in the background.
A modern multi-story house with large glass doors and balconies, surrounded by lush greenery and trees, with a swimming pool in the foreground illuminated at dusk.
A brushed gold call button placed on an oak table surrounded by orange leather chairs.
An aerial view of a large white luxury yacht with a smaller boat next to it, floating in the blue ocean.
A luxurious swimming pool surrounded by cream sunbeds and a hotel in the background.
A tropical outdoor pool area with a small gazebo with white curtains and a lounge chair inside, surrounded by lush green plants and trees, with a view of the clear sky.

Pioneering technology and world-class customer care

Call Systems Technology Ltd (CST), designs premium service call and communication solutions for superyachts, private residences, hotels, resorts and corporate environments. From bespoke Iris Collection call buttons to Gen2 messaging, StewardCall, and professional radios.

We help teams deliver discreet, responsive, and exceptional service.

Installed in

24,000+

Sites

Supplying

Trusted for

40+

30

Countries

Years

Brushed Bronzed Call Button being pressed
Gen2 software displayed on somebody's smart watch as they are using it.
A silver call button with a tan leather cover wrapped round it and 4 leather buttons on top. The button is placed on a set dining table.
A brushed gold call button with a tan leather circle on top in the centre, split 4 ways into 4 seperate buttons. The call button is on a small circular table next to a martini glass and a whiskey glass.
A silver double call button with 2 light silver buttons side by side. Below one is the text "AV" and below the other is the text "Service".
A black staff pager attatched to somebody's belt with a belt clip. There is a rectangular digital screen, displaying the message "Assistance Required Meeting Room 3"

  • "We are very happy, being able to offer luxurious and discreet service to all guests."

    Cheif Stewardess

  • "The call buttons makes life much easier... for both guests and staff."

    GM at Windsor Suite, Heathrow Airport

  • "Our team has an instant and reliable high end call button system"

    Captain

  • "I truly recommend to have this system on board. Buttons can be customised depending on the interior design."

    Chief Stewardess