Sony Ericsson GM47 - Manual (Page 99)

2. CALL CONTROL
99
LZT 123 7263 R1C
Note! The AT+VTS command is used only during a voice call.
<DTMF> Description
ASCII
character
string
An ASCII character string with entries in the set 0-9, #, *, 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”