I have an error code 407 and i cannot send a fax

SOURCE: We are not receiving faxes..we keep getting error

The message means:

407 No confirmation from the receiving station for the
previous page sent.
Wait a few minutes and send again.

This can mean 2 things

1) you have not set your fax machine to recieve faxes

2) you need to have your fax machine serviced because the part that makes it pickup a fax has malfuctioned

Clean all paper paths with paper path cleaner.
Unplug and then after 10 seconds replug the fax machine and do a test recieve for it

If all else fails, you may need to call a service person to repair or replace the broken or defective part that recieves faxes.

Hope this helps :)