Lexmark pro 705 Phone Line in use error after receiving

Try to plug in your printer straight to your wall jack. You can also try using a different phone cable.

This could be a hardware issue. Please contact Lexmark Technical Support Center to further troubleshoot and fix this problem quickly.

Sounds like a problem with the receiving fax machines phone line. Try send to another fax. If it is still doing the same thing, then the problem is in your line.

Do you have or does the receiving party have a DIGITAL phone line?

ALL fax machines are ANALOG devices.

I have a problem sending/receiving faxes. I have been trying to send a fax but it will not go through.

get phone line error when trying to send a fax, how can I fix

for these companies, try disconnecting the phone tremporarily to see if thsi is interferring just with these particular faxes. Sometimes if a company's fax is set to phone/fax, it may be trying to call you first beacuse ths would be the default settings. If it detects no phone it may by default accept your fax no problems. Hope this helps.

you may wish to try this link, and see if you find what you are seeking

www.lexmark.com

set baud rate to 9600 or slow
set resolution to standard
set error correction mode (ECM) off
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if fax has overseas mode turn it on

vonage can make changes to the line that could help, if your using a voice line with call waiting use *70 prior to the number to disable call waiting for that call

As some fax machines are not capable of receiving color faxes, legal size faxes, or faxes at 200x200 dpi resolution, make sure you are sending an A4 or letter size (not legal size) page at standard resolution:
Press the Black button for a black-and-white fax. Press the Quality button to check the selected resolution.
Make sure the All-In-One has enough memory free when you want to save the scanned documents into memory before sending the fax. Please refer to the following document: Click here to link to the relevant document.
Note: The scanned documents will only be saved in the memory before the whole fax is sent if the Scan Before Dial option is turned on. (This is the factory default.) Up to 50 black-and-white fax pages can be stored in memory at standard resolution when there are no pending faxes in the queue.
Turn off the Scan Before Dial option by pressing the following keys on the operator panel:
Press the Fax button, then press Options 15 times to get to ADVANCED FAX mode.
Press Select.
Press Options nine times until SCAN BEFORE DIAL appears on the LCD display.
Change the setting from Yes to No using the + (right arrow) button.
Press Select.
Note: The Scan Before Dial option controls whether a document is scanned before a call is dialed. This parameter only applies to a mono fax that uses either 200x100 or 200x200 resolution. Higher resolution mono faxes and all color faxes are scanned after the call is dialed and the receiving machine's capabilities are known.
Lower the fax transmission speed to 14400 or even 9600 bps, as some older fax machines are not capable of receiving a fax at a high speed. To do so:
Press the Fax button, then press Options 15 times to get to ADVANCED FAX.
Press Select.
Press Options 10 times until MAX SEND SPEED appears on the LCD display.
Change it to 9600 BPS using the - (left arrow) button.
Press Select.
Turn off ECM (Error Correction Mode) by pressing the following keys on the operator panel:
Press the Fax button, then press Options 15 times to get to ADVANCED FAX.
Press Select.
Press Options 11 times until ERROR CORRECTION appears on the LCD display.
Change the setting from On to Off using the + (right arrow) button.
Press Select.
Note: Turning off this option makes it possible to receive a fax when the receiver fax machine does not support certain error correction modes. The X6100 Series only supports 1-D MH encoding with the error correction. Fax transmissions without ECM and other ECM types can result in bad quality on the received page.