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.