Telex 38109-977 manual Wireless Intercom Interfaced to Matrix Intercom

Figure 5.10 Wireless Intercom Interfaced to Matrix Intercom

Since the RadioCom™ system is full duplex, with the base station transmitting continuously, there is no need for the matrix intercom to provide a PTT (Push To Talk) signal to the base.

In the case of radio systems where the base station is not transmitting continuously, the matrix must provide a logic signal corresponding to a user pushing an intercom key to talk to that wireless system. ADAM, ADAM-CS, and Zeus all come standard with logic signals, with open collector outputs for this purpose, and have available the UIO-256, as an accessory, which can provide an actual relay closure, if required.

C h a p t e r 5 - D e s i g n o f M a t r i x I n t e r c o m S y s t e m s 79