My AT&T landline has no dial tone - AT&T Lands Phones

Where I live, my landline company is responsible only up to a "demarcation point" - this is a box on the wall near where the phone line enters the house.

There is an RJ11 socket on the box,

and the technician (or you) plugs a known-working phone into the socket, and listens for a dial tone. If there's no dial tone, then the tech takes corrective action - replacing cable, or confirming correct operation of the distribution box on the boulevard / utility pole, or contacting billing to reactivate the line.

If I dial 611 from my or a neighbour's landline, they'll typically have tech to my door in 24 hours.

Beyond the 'demarcation point' (ie inside my house), it is my responsibility to ensure the internal phone wiring is operational.

Check your local thrift stores for a replacement phone, if necessary.

Your local hardware store will likely carry a 'tone & probe" set, which will indicate if a phone socket is wired properly, and can be used to follow a wire through walls / ceilings / floors.

Pro3000 Analog Tone and Probe

menu -33911
0 - tone
1 - impulse
press ok

For a mobile there is no dial tone, just dial the no and call.. However if you are refering the landline phones, check whether the cables are connected properly(if its a wired connection) or otherwise check whether its turned on or not..

I believe your landline carrier just needs to have the capability of call forwarding (ie we utilize Verizon for our business). We also use the call forward feature by: picking up line, (hear dial tone) dial *72 [ then phone number you want calls to forward to, even a cell]. To discontinue: pick up line (hear dial tone) dial *73

There's something wrong with the base unit that connects to the phone line. It's not sending any audio to the phone line, which would explain why tone dialing doesn't work and people can't hear you. (Pulse dialing doesn't need the audio tones so it will still work.)

I've never run across one doing this before. The problem is almost certainly some electronic failure, and I doubt there's anything you can do other than replacing the thing. If this is still under any warranty it should be up to the manufacturer to repair or replace it. If you got this from VoIP service provider, contact their customer service department.

There are two possible answers to this problem. The first thing is to check on the cordless phones, is a 2 way switch, one setting is for DP=Dial pulse (setting for old rotary phones) 2nd setting is TT= Touch Tone. I would guess that the setting should be set to TT on both cordless phones for touchtone.
Second thing to do is to plug in the base unit of your cordless phone to a jack that currently has a landline phone plugged into it that works and test again. If cordless phone works OK then go back to the original jack that didn't work and reverse the wires in the jack: that is what is known as a "polarity" issue.

It is a static buildup in the box. You will have to keep unpluging router for and cable for 10 seconds and reconnect each time.

check dialing mode matches what exchange is set to DTMF suspect phone is set to dec = decadic or pulse