The HomeServer can be connected to the internet via the internet connection using a DSL router.

ISDN NT
The HomeServer is connected to the ISDN network via the ISDN-NT(BA) (S Null).
Alternately, the HomeServer can also be connected to the S Null of a telephone installation. The S Null must also be designed as a Euro-ISDN/DSS0. The appropriate ISDN connection cable is included with the HomeServer.