The Gigaset DX600A ISDN from Siemens offers new possibilities for ISDN telephony. It features an excellent overview thanks to its large color display, professional contact management, three configurable answering machines, and extensive interfaces including Bluetooth, DECT, an Ethernet port for connecting to PCs, and an a/b interface for a fax machine. The high-quality ISDN phone can be used as a standalone telephone system or connected to a router or a telephone system, and it is the first Gigaset ISDN phone to also support the use of online services, such as an online phone book.