1. Introductions2. Terminal Description-1-VT-BDU user manualThe BDU unit is designed for VT video door phone system, for the purpose of video rep
3. System Topology-2- ●JW/OS: Input port; Connect to the door station. ●JW/VP1: Output port; connect to indoor monitors or next BDU unit. ●JW/VP2: Out
-3-3.2 Star distribute connectionVT System DistributorVT-BDU4AC ~AC ~AC ~AC ~AC ~AC ~VT-BDU4B3Y2W1R4B3Y2W1R4B3Y2W1R4B3Y2W1RVT-BDUJW/VP1JW/VP2JW/VP3JW/
3.3 Extended star connectionBDUBDU4AC ~AC ~ AC ~AC ~AC ~AC ~AC ~AC ~VT-BDU4B3Y2W1R4B3Y2W1R4B3Y2W1R4B3Y2W1RVT-BDUJW/VP1JW/VP2JW/VP3JW/OSHI75R150RSET-3Y
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