User's Manual

GM28 INTEGRATOR’S MANUAL

LZT 123 7468 P1A

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”