My officejet 4500 keeps giving me an error code 350 when trying to send a fax. how do i fix this?

The answer is here. You have to go to Settings and turn off Notifications.

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HP's description of this error code is as follows

Definitions

• The remote machine failed to respond to a fax command from the local machine because the connection was interrupted. These errors can occur if the phone lines in the area to be faxed are old or there is noise (static on the phone line). Other reasons can include power outages and other power-related problems.
• The call-waiting service can cause this error. The click, heard for an incoming call, is actually a momentary disconnect of the line.
• The remote user pressed the Stop key while the reception was in progress.
• Under rare conditions, incompatibility between the two machines might cause the remote machine to abandon the call.

Solutions

• Retry the fax reception at a different time when telephone line conditions have improved. Call the telephone provider if line conditions fail to improve.
• Disable ECM. Errors might still occur, and might result in a degraded image quality on the received page. However, the ability to send the entire document will be improved. Click here for instructions on enabling and disabling ECM (c00060802) (in English).
• Try sending at a lower transmission speed.

A fax error.

error 350 means a disconnection, from your machine to that of the remote fax machine. Disconnection can either come from a power shortage, defective or not so good telephone lines, a call-waiting mode on the telephone, a defective fax machine or manual interruption.

hp pro k8600 does not print a3 scale

1. issue may be with telephone line conditions,  try sending a fax at a different time 2. Disable Error Correction Mode 3. reduce thefax speed 4. try a fax test to  hp at 1888 473 2963 

there is not error code for the OfficeJet 4315. however, there are similar code for other Hp printer.
error "388" is lised as unable to detect T30 frames. in other words, the machine fail to establish comparable connection. this can be the machine trying to send out fax in high speed, or the phone line problem.
consult the user manul how to set a lower transmission rate, or try to send the fax at a differnt time of the day . If that still give you problem, please call the phone company and have they look a the phone line.

Hi Sir
this is very common error that happens in fax
i am sending a link which has all the things of hp
please follow that arcticle it is going to resolve the issue for you

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&dlc=en&docname=bpu02549

buy a new fax!