Unlike intercoms you need when using a Series 5 door phone no second line network: use the features of the phone (PBX) system. By connecting the optional trunk of this can be outside the phone after the next door building communication with the phone. The front door can be opened to the living room telephone, the standard DECT phone or via phone. A simple and economical solution. > Features:

• Compact door phones in metal construction
• Power is supplied by a / b cable
• Handsfree / Monitoring (full duplex)
• Freely programmable DSS keys
• Illuminated caption fields *
• remote configuration
• Custom voice prompt *
• Dimensions (H x W x D): 210 x 110 x 33 mm > * Also required for automatic speech and lighting: >> Power Supply 40-10-4437