Can't receive or send faxes

Noise in the phone line, or low signal strength during fax transmission can result in fax failures. Noise or poor signal strength can cause a partial or complete loss of fax information during transmission. When Error Correction Mode (ECM) is on, the receiving fax machine checks the fax information for errors during reception. If the receiving fax machine detects an error, the receiving fax requests that the sending fax resend the information. Resending all or part of the information can make transmission times longer, but helps improve the quality of the received fax.
If the phone line quality or signal strength is extremely poor, sending a fax can fail. Turning off ECM can improve the ability of the product to send a fax successfully when the phone line quality is poor. However, the image quality of the received fax might be poor.
If ECM must be off to send faxes successfully, have the telephone service provider check the phone line quality. For an HP Fax, turning off ECM from the control panel does not necessarily mean that fax transmission will not use ECM. Fax products use ECM as follows.

• All faxes sent in color use ECM.
• All faxes sent at the highest transmission speed use ECM.
• The ECM setting affects only sent faxes, not received faxes.

Enabling or disabling Error correction mode (ECM)

1. On the product control panel, press the Menu button ( ).
2. Use the arrow buttons ( ) to select Basic Fax , and then press the OK button ( ).
3. Use the arrow buttons ( ) to select ECM Mode , and then press the OK button ( ).
4. Use the arrow buttons ( ) to select On or Off , and then press the OK button ( ) to confirm the setting.
5. Press the Back button ( ) twice to return to the main screen.

When we are speaking about faxes you have to try at least a few numbers, because there is sometimes a temporary problems with tel line speed. To send or receive the fax the tel line should be stable. Fax machine try to connect to highest speed (33,6 by default) and if the line is not stable you will receive connection error.
Try again but tomorrow or ask yout telephone company if there is a problem with line
pifonski

Your fax machine thinks everything is OK. If you can receive you can send.

call the failing fax number with a regular phone and listen for fax tones.

basically error 232 indicates that a communication failure has occurred between the two machines
Following these steps may help resolving your issue

1. Make sure that the phone cord is plugged directly from the wall jack into the back port of the fax machine that is marked "Line" or "To Wall Jack", or that has a wall-jack symbol.
2. Verify that the line interface unit (LIU) (the box that the phone cord plugs into) is seated fully into the back of the fax.
3. Remove any other device from the line such as splitters, credit card machines, or telephone answering machines, and retry the fax communication.
4. Try sending and receiving faxes on a different fax line.
5.Try using a different telephone cord.
6. Have the phone company test your line for static or noise problems.
7. Disable Error Correction Mode (ECM) if the same error occurs repeatedly.

Hope this helps.
thx

There may be some static on the phone line, try a line filter. If possible, you could plug the fax into another working telephone line, and have someone send a fax to that number (whatever number is attached to the new phone jack) to isolate whether or not it is the machine, or the wall jack.

Ok, here's a check list for you.
SENDING

Check the following:

• Make sure the phone cable is connected correctly and verify that the phone line works by connecting a phone to it.



• Make sure that your recipient's fax machine is turned on and working.



• If you connected the Epson Stylus CX to a DSL phone line, you must install a DSL filter to the line or you won't be able to fax. Contact your DSL provider for the necessary filter.



• If your phone line has static or other noise problems, turn off the ECM (Error Correction Mode) setting and try faxing again.
  
  Follow these steps to turn off the ECM setting:
  
  
  1. Press Setup.
  
  
  
  2. Select Fax Settings, then press OK. You see this screen:
  
  
  
  
  
  3. Select Communication, then press OK.
  
  
  
  4. Press and select ECM. Then press and set it to Off.
  
  
  
  5. Press OK.

RECEIVING


Try the following if you can't receive a fax:

• Make sure the phone cable is connected correctly and verify that the phone line works by connecting a phone to it.



• To receive faxes automatically, make sure the Auto Answer light is turned on. To turn it on, press the Auto Answer/Space button.
  
  
  
  



• Make sure paper is loaded.



• If you connected the Epson Stylus CX to a DSL phone line, you must install a DSL filter to the line or you won't be able to fax. Contact your DSL provider for the necessary filter.



• If your phone line has static or other noise problems, turn off the ECM (Error Correction Mode) setting and try faxing again.
  
  Follow these steps to turn off the ECM setting:
  
  
  1. Press Setup.
  
  
  
  2. Select Fax Settings, then press OK. You see this screen:
  
  
  
  
  
  3. Select Communication then press OK.
  
  
  
  4. Press and select ECM. Then press and set it to Off.
  
  
  
  5. Press OK.

The receiving fax machine is turned off or not functioning. Try calling your cell phone.

Do you have a DSL phone line?

344 Error can be caused by a few things. One of the following is occurring:
The sending fax has failed to respond to a fax command from the receiving fax due to poor line quality or fax interruption.

The sender has pressed cancel button while the reception was in progess.

In rare conditions, incompatibility has been encountered by two faxes and causes the sending fax to abandon the fax call.

Solutions:
Fax session was using ECM. Check your fax settings under the fax set-up menu on the printer. Disable the ECM (Error Correction Mode).

Fax at a different time to see if line quality improves.

Try relocating the fax to a differnt phone plug.

Replace the phone cord attached to the fax/printer.

First, check your fax's phone line. Put a regular phone on it and check for dial tone and line noise. If the line is dead or noisy, this will cause a problem. 
You can also try dialing your fax number from another phone and see if the fax unit picks up the line and starts initiating communication. (sounds like modem noises)

A lot of Voice Over IP phone providers don't support FAX or you have to pay extra for it. If thet refused to help, then they probably don't support it, if they did, they would try to get you to buy it. FAX data is not always compatible with VOIP transmission. Not much you can do about it, except compalin louder to them. If it is possible to set the baud rate of your fax slower, that might help.