MNO = 6
PQRS = 7
TUV = 8
WXYZ = 9
For example, the command attend “teltone”<CR> will send the digits 8358663.
The entire string, including ATD and both quotation marks, can be up to 40 characters. If more char-
acters are to be sent, multiple D commands must be issued.
Once a call has been connected, any subsequent D commands (that is, those entered while the line
is off-hook), are processed in exactly the same manner as the initial D command, except that the
T-311 does not wait 2 seconds for dial tone.
Step 1: Send One or More D commands.
•
Once a call is established, send DTMF digits or alphabetical characters as follows:
•
Send DTMF digits 1 through 0, A, B, C, D, #, or * by issuing the command
ATD n...n <CR>
Send alphabetical characters with the command
ATD“ n...n” <CR>
Step 2: Disconnect Line
•
When data transmission is complete, “hang up” by issuing
ATH<CR>
T-311
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