S-COM 7K, Manual, Page: 53 / 400

Messages
4-27
DTMF Characters
There are 16 DTMF Characters : numerals 0 through 9, letters A through D, and
the symbols (*) and (#). Each character has a two-digit code, shown in the
DTMF Characters Table which follows (reprinted on page A-8). Enter the
appropriate two-digit code for each DTMF character that you wish to send.
The following table shows DTMF Characters and their related control
characters (codes):
DTMF Characters
Control Character 9950
DTMF Character Code DTMF Character Code
0 00 8 08
1 01 9 09
2 02 A 10
3 03 B 11
4 04 C 12
5 05 D 13
6 06 * 14
7 07 # 15
DTMF Duration Change Characters
DTMF Duration Change Characters are used to set the duration of the DTMF
characters that follow. Ten (10) DTMF duration change characters have been
defined from 30mS to 200mS using the codes 20–29. The DTMF Duration may
be changed as often as desired within a DTMF message. This parameter is not
changed at the end of the DTMF message.
The following table shows DTMF Duration Change Characters :
DTMF Duration Change Characters
Control Character 9950
DTMF Duration Change Code
30mS 20
40mS 21
50mS 22
60mS 23
70mS 24
80mS 25
90mS 26
100mS 27
150mS 28
200mS 29