Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 599)

Audio Commands
DTMF Signals +VTD
©Restricted
Page: 51 / 158
This document is the sole and exclusive property of Wavecom. Not to be distributed or divulged without
prior written agreement.
WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
21.14 DTMF Signals +VTD
21.14.1 Description
The product enables the user application to send DTMF tones over the GSM network.
This command is used to define tone duration.
21.14.2 Syntax
Action command
AT+VTD=<n>
OK
Read command
AT+VTD?
+VTD: <n>
OK
Test command
AT+VTD=?
+VTD: (list of supported <n>s)
OK
21.14.3 Parameters and Defined Values
<n>:
length of tones emitted as a result of the +VTS command, in
units of 100 ms
integer type
Value zero (default value) causes a tone duration of 70 ± 5 ms,
according to 3GPP 23.014 [11] .
The value used is modulo 256.
21.14.4 Parameter Storage
None.