Telephone gateway, Busch-Welcome (2-wire system), system devices, telephone gateway For connecting a Busch-Welcome system to the analog inputs of an existing telephone system. Enables the use of a telephone (e.g. DECT, ISDN, mobile phone) as an indoor door communication station. Answering calls, opening doors, switching lights via the telephone keypad (DTMF). Switching between freely programmable destination numbers via the telephone keypad (DTMF). PIN protection for all configuration settings. For Busch-Welcome systems with up to 99 residential units. Programming via the telephone keypad (DTMF) or via a web browser (requires IP gateway 83342). 2 screw terminals for analog a/b connection of the telephone system. Consumption units: 1 Protection class device: IP 20 Temperature range device: -5 °C to 45 °C Dimensions (H x W x D): 90 mm x 72 mm x 65 mm Division unit: 4