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