Case A: Separate fax line (no voice calls received)

If you have a separate phone line on which you receive no voice calls, and you have no other equipment connected on this phone line, set up the HP All-in-One as described in this section.

Figure 4-1 Back view of the HP All-in-One

1Telephone wall jack

2Use the phone cord supplied in the box with the HP All-in-One to connect to the "1-LINE" port

To set up the HP All-in-One with a separate fax line

1.Using the phone cord supplied in the box with the HP All-in-One, connect one end to your telephone wall jack, then connect the other end to the port labeled 1-LINE on the back of the HP All-in-One.

NOTE: If you do not use the supplied cord to connect from the telephone wall jack to the HP All-in-One, you might not be able to fax successfully. This special phone cord is different from the phone cords you might already have in your home or office.

2.Turn on the Auto Answer setting.

3.(Optional) Change the Rings to Answer setting to the lowest setting (two rings).

4.Run a fax test.

When the phone rings, the HP All-in-One will answer automatically after the number of rings you set in the Rings to Answer setting. Then it will begin emitting fax reception tones to the sending fax machine and receive the fax.

Case B: Set up the HP All-in-One with DSL

If you have a DSL service through your telephone company, use the instructions in this section to connect a DSL filter between the telephone wall jack and the HP All-in-One. The DSL filter removes the digital signal that can interfere with the HP All-in-One, so the HP All-in-One can communicate properly with the phone line. (DSL might be called ADSL in your country/region.)

NOTE: If you have a DSL line and you do not connect the DSL filter, you will not be able to send and receive faxes with the HP All-in-One.

Fax setup

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HP J5740, J5788 Case a Separate fax line no voice calls received, To set up the HP All-in-One with a separate fax line

J5788, J5740, J5780, J5750 specifications

The HP J5780 is a versatile all-in-one inkjet printer that combines printing, scanning, copying, and faxing capabilities in a single device. Ideal for home and small office environments, this printer is designed to cater to a wide range of document-related needs. Its compact form factor allows it to fit easily into tight spaces without sacrificing functionality.

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In summary, the HP J5780 is a comprehensive all-in-one solution that emphasizes productivity without compromising quality. Its combination of printing, scanning, copying, and faxing functionalities, along with its user-friendly features, makes it a reliable choice for those seeking efficiency and versatility in their document management tasks. Whether for home use or small office settings, the HP J5780 delivers dependable performance and a range of technologies designed to meet diverse printing needs.