I am running to the forum again for help I do not know if anyone has had any luck with getting multifunction printers that have fax working to be able to fax.
I called brother they said making the change from normal operation to basic in miscellaneous will bring the baud rate down. they could not tell me what it would bring the baud rate down to but oh well. also they said they did not have an error checking option to be turned off for the multifunction.
lol
im open to suggestions i can dial out and it sounds like the fax is working but it doesnt the line will just stay open forever
Brother 420cn multifuction FAX Problem
Moderators: Bill Smith, Pilot
comm error 80 01
i keep getting comm error 80 01
found this but still no go
Lowering the Baud rate and disabling
ECM on a Brother MFC 420CN
This multifunction Brother machine has a normal Fax BAUD rate of 14400. Use the following steps to set the machine to a basic setting which will both lower the BAUD rate to 9600 and disable ECM.
* Press the Menu or Menu/Set key, then Fax, Miscellaneous, and Compatibility.
* Use the Up or Down arrows to select Basic.
* Press OK or Menu/Set or the Set key.
* Press Stop/Exit.
ecm is error checking mode

still no faxes are sending
but hey may work for others
ECM on a Brother MFC 420CN
This multifunction Brother machine has a normal Fax BAUD rate of 14400. Use the following steps to set the machine to a basic setting which will both lower the BAUD rate to 9600 and disable ECM.
* Press the Menu or Menu/Set key, then Fax, Miscellaneous, and Compatibility.
* Use the Up or Down arrows to select Basic.
* Press OK or Menu/Set or the Set key.
* Press Stop/Exit.
ecm is error checking mode
still no faxes are sending
but hey may work for others