Aiphone GT Video-intercom System Guide
GT Expanded Configuration
The Expanded Configuration GT system uses the GT-VBX Expanded Video Bus
Control Unit and the GT-BCX Expanded Bus Control Unit to provide 4 additional
sub trunk lines, allowing up to 4 sets of GT-VBC and GT-BC control units (the same
units used in a Standard Configuration GT system) to be used instead of just one
set. The GT-VBX and GT-BCX must be mounted adjacent to each other, as their
interconnecting cable is only 40cm long.
Two additional GT-BC Bus Control Units are also able to be used to provide two
sets of trunk lines for entrance stations and concierge/security guard stations.
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