At+Qldtmf Play Local Dtmf - Quectel EC25 Command Manual

2. DTMF characters - ASCII:
DTMF
0
1
2
3
4
5
6
7

12.14. AT+QLDTMF Play Local DTMF

The command is used to play a local DTMF string, and the maximum length is 20 characters. It can be
used to stop playing the DTMF string.
AT+QLDTMF Play Local DTMF
Test Command
AT+QLDTMF=?
Write Command
AT+QLDTMF=<n>,<DTMF_string>[,<y
>]
Execute Command
AT+QLDTMF
Maximum Response Time
Parameter
<n>
<DTMF_string>
EC25&EC21_AT_Commands_Manual
ASCII
48
49
50
51
52
53
54
55
Response
+QLDTMF: (1-1000),(0-9,*,#,A-D )
OK
Response
OK
+CME ERROR: <err>
After the DTMF string is completely played:
+QLDTMF: 5
Response
OK
300ms
Numeric type. Indicates every DTMF‟s play time and mute time. The range is 1
-1000, and the unit is 1/100 second when <y> is set to 1, or 1/10 second when <y>
is not set.
String type. Maximum 20 DTMF strings, separated by comma. DTMF format: 0-9,
*, #, A-D.
EC25&EC21 AT Commands Manual
DTMF
8
9
A
B
C
D
*
#
LTE Module Series
ASCII
56
57
65
66
67
68
42
35
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