<mode> Description

0“Drop DTR” ignored but OK response given. ATH disconnects

1“Drop DTR” and ATH ignored but OK response given

2“Drop DTR” behavior according to &D setting. ATH disconnects. Default value

Note!_

2.12 AT+VTS DTMF and Tone Generation

Description

Command

Possible Responses

 

 

 

Request transmission of

AT+VTS=<DTMF>

OK

DTMF tone(s)

 

ERROR

 

 

Show if the command is AT+VTS=?

OK

supported

 

ERROR

 

 

 

This command allows the transmission of DTMF tones. These tones may be used, for example, when announcing the start of a recording period. The command is write only. In this profile of commands, the command does not operate in data or fax modes of operation (+FCLASS=0,1,2-7).

NOTE! - The ATD-command is used only for dialing. It is not possible to generate arbitrary DTMF tones using the ATD command.

NOTE! - The AT+VTS command is used only during a voice call.

<DTMF> Description

ASCII character An ASCII character string with entries in the set 0-9, #,

string *, A-D separated by commas. Each entry is interpreted as a single ASCII character.

Example: The string “8,9” sends two DTMF tones, “8” followed by “9”

Owner’s Manual

Rev 1.0

Page 70 of 70