Telit Wireless Solutions LE910 - Tone Duration - +VTD

Telit LE910 V2 Series AT Commands
80446ST10707A Rev. 0– 2015-11-03
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Mod. 0808 2011-07 Rev.2
Tone Duration - +VTD
+VTD - Tone Duration
SELINT 2
AT+VTD=
<duration>
Set command sets the length of tones transmitted with +VTS command.
Parameter:
<duration> - duration of a tone
0 - the duration of every single tone is dependent on the network (factory default)
1..255 - duration of every single tone in 1/10 sec.
AT+VTD?
Read command reports the current Tone Duration, in the format:
<duration>
AT+VTD=?
Test command provides the list of supported <duration>s in the format:
(list of supported <duration>s)
Reference
3GPP TS 27.007 and TIA IS-101