The most likely reason is that the modem is not connected to a phone line. Another possibility is that the phone service in your area has been temporarily disconnected.
On a modem, or any other device that uses the "AT" command set, you can put the letter P for Pulse or T for Tone in the dial string. For example, ATDP9,1800T555P0123 would pulse-dial 9 (pause) 1 8 0 0, then tone dial 555, and then pulse dial 0123. On many landline push-button phones, there is a switch that allows you to select Tone or Pulse dialing. If you have the switch set to Pulse and hit the star key, the phone will switch over to Tone dialing for the rest of that call.
Verify the phone line has a dial tone by plugging in a telephone to the same line that goes to your computer. If that checks out, restart your computer. If you still get the same error uninstall your modem and restart your computer again.
Modem Helper is a very useful utility that is factory installed with many Dellâ„¢ computers that have modems. Modem Helper runs a set of tests to detect the modem, analyze it, and provide relevant instructions should any problems be detected. It can be used to reinstall drivers, detect if a dial tone is present, or even see if a modem is installed or not in the machine
Dialing any digit will temporarily drop dial tone.
it's when you pick-up the handset of the server, you will get dial tone server
The dial tone in Spain is not the same as the dial tone in the UK. However, mobile phones generally do not have a dial tone at all.
it's when you pick-up the handset of the server, you will get dial tone server
A
In general, you will always have a dial tone when you are calling from a landline phone, but never from a mobile phone.
Is there a way to recover deleted dialed number from my mobile ...
If a phone is in a business, all you usually have to do is dial '9' and wait for a regular dial tone.
Dial Tone