Dynamic spectrum management
Dynamic Spectrum Management (DSM) is a DSL technology and is intended to optimize the frequency spectrum of DSL connections in order to enable higher bit rates. Dynamic spectrum management should enable transmission rates of up to 100 Mbit / s on the copper lines currently in use. This is to be achieved in particular through the cross-line optimization of the signal cross-talk behavior (crosstalk) by means of DSM servers that coordinate the frequency use of neighboring lines in the distribution cables.
The method is actually used in VDSL2 vectoring within the framework of ITU-T recommendation G.993.5 .