System Expansion

The GTI-PC system can be expanded by adding up to 3 additional DOU’s to the existing system. This would allow the site to utilise up to 16 separate cable paths (CSG’s) and increase the number of available stations by 114 per cable.

Each DOU is designed to report back immediately when there are hardware issues, such as a blown fuse. An extended test can also be performed from the central computer.

These additional Expansion DOU’s can be located next to the Central DOU, or in conjunction with Communication Boosters, the user can create a distributed system.

To submit an online application to expand the DOU, please fill in the form below.

Distributed system

A distributed system is where each DOU is installed close to the area it controls. DOU’s then communicate with the computer using Communication Boosters and a telecom cable therefore reducing cable costs.

There is also the added benefit of reducing potential volt-drop problems giving increased reliability and reduced maintenance and servicing costs.

For further information on DOU configurations see Product Manual GTI-PM-004

It is not possible to expand the GTI-EC system beyond 4 CSG’s but it can be easily upgraded to a GTI-PC system which allows for up to 4 DOU’s and 16 CSG’s.

Additional Reading

GTI-TSD-012 – Adding and ordering an Expansion DOU
GTI-TD-048-1117 – Communication Booster Installation
GTI-PM-004. GTI-PC Hardware Guide
GTI-PM-008 – Adding an Expansion DOU to an existing GTI-PC System

Related Pages

Installation design options