Manual ISDN telephone adapter
2 Installation of the ISDN telephone adapter
2.1
Removing your existing ISDN installation
The first step is to disconnect your ISDN and analog telephones as well as your
fax from your existing ISDN-NT device. You can do this yourself, if your ISDN
telephones are directly connected to the ISDN-NT device or if several ISDN-
3 De-Installation von ISDN NT
DECT telephones (with wireless technology) are in use in your household.
The ISDN-NT device is illustrated in the following figure. Please disconnect and
remove your ISDN and analog telephones as well as your faxes.
If you have an ISDN house installation with ISDN telephones distributed
around the building, which was installed by a professional electrician/tele-
communications engineer, then please consult the latter. If you personally
have the necessary expertise, then proceed as described in chapter 3.
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