Konftel 50 Conference Phone (2715327) Power supply: Transformer 240 V AC/12 V DC, 700 mA. Electrical cable 6 metres, modular 4/4. Connection: Analogue in/out 3 metres, modular 6/6. Switchbox with modular 4/4, 0.5 metre. Compatibility: Can be connected to a system telephone under virtually any PBX. Color: Seashell white Connects to most IP, system, DECT and mobile phones