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I want to make sure I understand this completely. You get no dial tone from the fax machine when hooked up to VOIP. In the past, was there an audible dial tone from the fax, or did it just dial silently and give you an error if there was no tone?
When you said you got a dial tone by connecting a phone to the ext phone port of "the machine" did you mean the fax machine? If you get a dial tone by running a phone through the fax machine, then the line is good. I have used a fax machine over Sunrocket before they went defunct, which used the same technology base as Vonage - so it should work.
If you used to get an audible dial tone when using the fax, and no longer do, and you are geting a dial tone on a regular phone that is connected to the ext. port of the fax machine, then the problem has to be in the fax machine itself, not the VOIP.
If you can verify that, we can go from there.
Adjust you transmission speed to the lowest setting then try.
Keep boosting speed up until you can no longer connect then back down one speed.
This brand is known for communication problems with other brand of fax machines.This is the only workaround that has supplied results for me.
Driver could be corrupt. Disconnect the printer or at least be sure it is turned off. I'd do both and reinstall the CD software program that came withthe printer. When the software program asks you to connect theprinter to the USB port, do so and it should again work properly. Hope this helps. Bud
you can purchase the ink here: http://www.brother-usa.com/accessories/Accessories.aspx?Model=MFC420CN&ACASCID=30 you can download the software for your Brother MFC 420 CN printer here:
At the brother site. Click Product Support Then Your language, which for me was US English. Then click MFC then scroll down about 2/3rds the page you will find the MFC 420 CN Click that, than click downloads. The drivers , utilities and firmware for the MFC are all there.
do you use generic ink? If yes, the generic ink might have clogged the ph (valve stucks inside because of lack of additives!).
Anyway, do this: (use near full level ink carts!) make sure carts are placed well and are secured. Press menue then start bk copy then fortimes arrow up. machine will be in maintenance mode. press 7 then 6 then 4 then start bk copy. machine will refresh ink in tubes and ph and do some cleaning cycles. when finished press 7 then 6 then 3 then start bk copy. ,achine runs a power purge. when fisihed press 9 then 9 to leave the mode. press ink etc. to run a quality test print. If you still cant see any magenta, the ph is defective and needs replacing!