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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.
The control panel features a series of buttons as well as an LED "Status" screen.
Press the "MENU" button. Go to INITIAL SETUP, select "FAX" select "RECEIVE MODE" change to F/T
If you are using the Brother on a line by itself, set it to "Fax." If you are using the Brother on a line that also shares a telephone, set it to "Fax/Telephone." If you are using the Brother IntelliFax along with ananswering machine, set it to "TAD." Once you set your IntelliFax to the appropriate mode, the unit will leave "Sleep" mode and be ready for use.
Select "GENERAL SETUP" go to "ECOLOGY" and #2 is SLEEP TIME = adjust to 60 sec. This keeps the machine from becoming idle/sleep mode for a longer period.
The Brother machines go into sleep mode to save power, in the machine setup you select how long to wait before going to sleep. When all is working, it will wake up as soon as a fax is received, so you really don't need to change it. If you use menu to reports and select the user settings to print, it will tell you where the setting is at.
You may not need a separate fax line from Vonage. If you don't need a dedicated fax line, you can try changing the "Bandwidth Saver" settings on your Vonage voice line from your account on the Vonage website. Perform the following:
1. Login to your Vonage account online and click the "Features" tab. 2. Scroll down to the "Bandwidth Saver" link and click on the "Configure" button. 3. You will see a scrollbar with 3 settings: 30kbps, 50kbps and 90kbps
NOTE: My "Saver" was set to 90kbps (Highest Sound Quality) by default.
4. Click on 30kbps (Normal) and click "Submit". 5. Wait about an hour before testing as it could take that long for the change to take effect. 6. Send a test fax to the HP fax test service at 1-888-hpfaxme (1-888-473-2963).
NOTE: This is a GREAT service provided by HP. If your fax goes through correctly, you will receive a return fax within five minutes.
We upgraded to Verizon FiOS and never thought the increased upload speed (4mbps) would present an issue sending faxes. WRONG. We never had fax issues with DSL, Comcast or even Broadstripe VOIP service but for some reason Vonage + FiOS = no fax. That is until we set our Vonage VOIP sound quality to "Normal". Our phone voice quality has been much more reliable since throttling back. This sentiment has also been shared by other Vonage users who have experienced echoing and noise when utilizing the higher quality settings.
Your phone coversations may not have FM quality sound but they will have AM quality and usually that is just fine.
If your fax machine has a Telephone Answering Device (TAD) setting, you can share your voice line with your fax machine and be able to receive faxes and voice messages. Hopefully this will work for you.
Call your telephone provider. There may be noise on the line. Ask you telephone provider to perform a line check on your line. If there is a problem they can fix it on their end. Worst case senario, they come to location as you have poor lines or old lines into your home.
If you have Vonage or Comcast Digital phone service, you will want to slow down your modem speed on the fax machine. Your manual should show you how to do it.