HP LaserJet Pro 400 color MFP M475 - DSL

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A digital subscriber line (DSL) uses digital technology over standard copper telephone wires. This
product is not directly compatible with those digital signals. However, if the configuration is specified
during DSL setup, the signal can be separated so that some of the bandwidth is used to transmit an
analog signal (for voice and fax) while the remaining bandwidth is used to transmit digital data.


Not all faxes are compatible with DSL services. HP does not guarantee that the product will

be compatible with all DSL service lines or providers.

A typical DSL modem employs a filter to separate the higher frequency DSL modem communication
from lower frequency analog phone and fax modem communication. It is often necessary to use a
filter with analog phones and analog fax products that are connected to a telephone line used by a
DSL modem. The DSL service provider usually provides this filter. Contact the DSL provider for more
information or for assistance.