Connect dial tone

Cellular phones have not dial tone. You must only dial a number and then press a green key.

To work you must have a valid SIM for this (you must see the name of your phone company on the display, and you must have a good level for the signal in your area).

Double check the physical connection on your phone line. Try to unplug and re-plug the phone jacks. If there's no dial still, you can contact your phone company using your cellular phone and ask if there's a line problem in your area.

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.

It is possible the display itself, or the logic connector from the LCD display to the chipset that drives it may have been damaged. Nearly all these type of devices are NOT user serviceable. The internal wiring and connections are so small that human fingers cannot manipulate them.

LCD displays are especially vulnerable to shock. I noticed on your Question to FixYa you stated that this is a cellular phone, but your description stated that it gets a dial tone. Cellular phones do not use dial tone. I am going to assume that you are referring to a cordless phone connected to your home land-line, but even if you are referring to a cellular phone, they share the same strengths and weaknesses.

The LCD display itself has numerous circuits, its not just one ore two wires. You can see this on older LCD's by the wide ribbon cable that was used to connect the display to the driving circuit board. Take apart an old calculator to see what I mean. Newer displays are actually soldered directly to the circuit board, with anywhere from 64 and 128 connections for small applications like a calculator, or a digital clock, to 512, 1024, 2048 or more connections for larger applications like TV screens. Generally, the more colors,features, and detail you have, the more internal connections you have, therefore the more fragile the device becomes.

Unfortunately, the display is the most expensive individual component on most devices, so most warranties, if covered, will replace the item instead of repairing it. Contact the manufacturer, your unit may be under warranty...

error code 680 means there is no dial tone.

manually attach a phone to the phone jack you are connecting to and check if there is a dial tone. if there is no dial tone on that jack try a diff phone jack. if still fails call your telco.

if there is dial tone to other jacks it means the previous jack is faulty or damage.

I would contact your phone provider. It could be a coinceidence that the dial tone stopped working.
DSL does not require dial tone to work.

Headset says ringer off, cannot hear dial tone

dial tone but mobiles ahve no dial tone when making or receiving calls.....

there is no dial tone on cell phones.......you need to replaced the speaker

i have tried the same thing and the dial tone has failed but i think you might have to have credit on your phone to do it but i'm unsure to cause mine won't work