PROPOLOGY
Control Units - Communications Control & Monitoring
Audio Surveillance Receiver and Monitor (simulated) with operational LED indicators.
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CVDS Operator Telephone Terminal Model 2656
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LTS-10 Audio Router
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Mobile (Cellular) Phone Scanner / Tracker (simulated - ND)
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Nitsuko DTS-S System - Onyx VS 88500A - Business Phone System Controller
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Northern Telecom Datapath Model NT 4X 25AG - Business Telehone System Controller
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RS Telephone Tester Model 43-114
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