User guide

3GPP TS 27.007 AT COMMANDS
75 AT Commands for EV-DO-EV3 Modems
Parameters and Values
<n> Enable flag.
0 Disable +CME ERROR:<err> reports, use only ERROR report. Default: 0.
1 Enable +CME ERROR:<err> reports, with <err> in numeric format.
2 Enable +CME ERROR: <err> reports, with <err> in verbose format.
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 users to send DTMF tone sequences.
Test command provides the list of supported <dtmf>s and the list of supported <duration>s in the format:
(list of supported <dtmf>s)[,(list of supported <duration>s)]
Syntax
Command Command type
AT+VTS=<dtmfstring>[,duration] Execute
AT+VTS=? Test
Parameters and Values
<dtmfstring> String of DTMF tones, which are ASCII characters in the set (0-9), #, * the string
can be 32 characters long. Tone duration is defined through the +VTD command.
Note: Input <dtmf string> without the double quotation mark (“”).
<duration> Duration of a tone in 1/100 sec. This parameter can be specified if only one ASCII
character is used in the dtmfstring.
0…5 A single DTMF tone is transmitted for a duration depending on the network, no
matter what the current +VTD setting is.
Notes
 This command operates in voice mode only. See +FCLASS.
 Reference: 3GPP TS 27.007 and TIA IS-101.