Fax and digital phone services
Many telephone companies provide their customers with digital phone services, such as the following:
DSL: A Digital subscriber line (DSL) service through your telephone company. (DSL might be
called ADSL in your country/region.)
PBX: A private branch exchange (PBX) phone system.
ISDN: An integrated services digital network (ISDN) system.
FoIP: A low-cost phone service that allows you to send and receive faxes with your printer by