Defined Values; Vts-Generate Dtmf And Tone; Command Syntax; Description - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification

11.5.3 Defined Values

<n>:
0: Mute off (default value)
1: Mute on
This value is restored to 0 when voice call is ended.
11.6 +VTS–Generate DTMF and Tone

11.6.1 Command Syntax

Command
+VTS=<DTMF_CHAR>
+VTS=<DTMF_CHAR>[,
<duration>]
+VTS=?

11.6.2 Description

This command is intended to send ASCII character which causes the Mobile
Switching Center (MSC) to transmit DTMF tone to a remote subscriber. The command
can only be used during active voice calls and offers the following rules:
AT+VTS=<DTMF_CHAR> allows to send a single DTMF tone-with a default duration
of 100 ms.
AT+VTS=<DTMF_CHAR>[,<duration>] allows to send a single DTMF tone. In this
case, the duration can be individually determined during the call.
11.6.3 Defined Values
<DTMF_CHAR>: a single ASCII character in the set 0–9, #, *, A, B, C, D.
<duration>: tone duration in 1/10 seconds with tolerance. The minimum duration of
DTMF signals is 100 ms. DTMF tone below 100ms cannot be generated.
1–255: The unit is 1/10 second.
Issue 04 (2013-01-28)
Possible response(s)
<CR><LF>OK<CR><LF>
<CR><LF>ERROR<CR><LF>
<CR><LF>+CME ERROR: <err><CR><LF>
<CR><LF>+ VTS: (list of supported
<dtmf>s)<CR><LF><CR><LF>OK<CR><LF>
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Audio Commands
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