Com Ports - Technical Information

Standard Modem Commands

Command Description
AT Initialization code. You need to send this code before sending any other commands.
D Tells the modem to dial a number. You can place a P or T after the D command specifying Pulse or Tone dial, respectively. Then, put the number you want to dial. For example,
ATDT01992354987
would dial 01992354987 using Tone dial. You usually use Tone dial rather than pulse dial (which is the old rotary dial system).
A/ Redial (AT is not required)
H0 Hangs Up
H1 Goes off hook
ATI3 modem Information
E0 Echo off (your command is not returned in the result)
E1 Echo on

If you have some more commands you would like to add, contact me.

You might also like...

Comments

Contribute

Why not write for us? Or you could submit an event or a user group in your area. Alternatively just tell us what you think!

Our tools

We've got automatic conversion tools to convert C# to VB.NET, VB.NET to C#. Also you can compress javascript and compress css and generate sql connection strings.

“Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.” - Antoine de Saint Exupéry