HP Officejet Pro 8600 - Manual (Page 129)

electronics store that carries phone accessories. You also need another
phone cord, which can be a standard phone cord that you might already
have in your home or office.
• Try connecting a working phone and phone cord to the telephone wall jack
that you are using for the printer and check for a dial tone. If you do not hear
a dial tone, call your local telephone company for service.
• Other equipment, which uses the same phone line as the printer, might be
in use. For example, you cannot use the printer for faxing if an extension
phone is off the hook, or if you are using a computer dial-up modem to send
an email or access the Internet.
• Check to see if another process has caused an error. Check the display or
your computer for an error message providing information about the
problem and how to solve it. If there is an error, the printer cannot send or
receive a fax until the error condition is resolved.
• The phone line connection might be noisy. Phone lines with poor sound
quality (noise) can cause faxing problems. Check the sound quality of the
phone line by plugging a phone into the telephone wall jack and listening for
static or other noise. If you hear noise, turn Error Correction Mode (ECM)
off and try faxing again. For information about changing ECM, see Send
a fax in Error Correction Mode. If the problem persists, contact your
telephone company.
• If you are using a digital subscriber line (DSL) service, make sure that you
have a DSL filter connected or you cannot fax successfully. For more
information, see Case B: Set up the printer with DSL.
• Make sure the printer is not connected to a telephone wall jack that is set up
for digital phones. To check if your phone line is digital, connect a regular
analog phone to the line and listen for a dial tone. If you do not hear
a normal sounding dial tone, it might be a phone line set up for digital
phones.
• If you are using either a private branch exchange (PBX) or an integrated
services digital network (ISDN) converter/terminal adapter, make sure the
printer is connected to the correct port and the terminal adapter is set to the
correct switch type for your country/region, if possible. For more information,
see Case C: Set up the printer with a PBX phone system or an ISDN line.
Solve fax problems 125