DECT range is too lowThe range of the DECT connection between a cordless telephone and the FRITZ!Box is too low. Even at a short distance from the FRITZ!Box, the connection drops or is interrupted, or you hear an annoying crackling when conducting calls over DECT. The telephone may completely lose the DECT connection and show the error "Search for base" on its display. Cause Surrounding...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7690/47_DECT-range-is-too-low/
Transferring telephone callsYou can transfer telephone calls to an external telephone number or to another telephone that is also connected to the FRITZ!Box.Requirements / Restrictions FRITZ!App Fon does not support transferring calls to another telephone. Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.1 Transferring a...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7690/60_Transferring-telephone-calls/
FRITZ!Box: Supported DSL linesThe FRITZ!Box supports almost all of the ADSL/VDSL standards and technologies used in Germany and most of the ones used in the rest of Europe. This means that the FRITZ!Box can be used with virtually any DSL line and can establish internet connections with speeds of up to 300 Mbit/s with supervectoring.Supported DSL standards Deutsche Telekom 1TR112 (VDSL2 / ADSL2+ /...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7690/37_FRITZ-Box-Supported-DSL-lines/