Parameters and values, Notes, Voice control – Synaccess Networks NP-0801DTM User Manual
Page 98: Dtmf tones transmission +vts, Syntax

3GPP TS 27.007 AT COMMANDS
HSPA+ AT Commands Reference Guide
98
Parameters and Values
Enable flag.
0
Disable +CME ERROR:
1
Enable +CME ERROR:
2
Enable +CME ERROR:
Notes
+CMEE has no effect on the final result code +CMS.
Reference: 3GPP TS 27.007.
Voice Control
DTMF Tones Transmission +VTS
Execute command allows the transmission of DTMF tones.
Test command provides the list of supported
(list of supported
Syntax
Command
Command type
AT+VTS=
Execute
AT+VTS=?
Test
Parameters and Values
String of
user to send a sequence of DTMF tones, each of them with a duration that was
defined through +VTD command
Duration of a tone in 1/100 sec. This parameter can be specified if only one ASCII
character is used in the dtmfstring.
0
A single DTMF tone is transmitted for a duration depending on the network, no
matter what the current +VTD setting is.
1‐255
A single DTMF tone is transmitted for a time
matter what the current +VTD setting is.
Notes
This command operates in voice mode only. See +FCLASS.
The character P does not correspond to any DTMF tone, but it is interpreted as a pause of 3 seconds between
the preceding and succeeding DTMF string elements.
Reference: 3GPP TS 27.007 and TIA IS‐101.