User guide

3GPP TS 27.007 AT CO

MMANDS

AT Commands for EV-DO-EV3 Modems

Tone Duration +VTD

Set command sets the length of tones transmitted with +VTS command.

Read command reports the current Tone Duration, in the format:

Test command provides the list of supported <duration>s in the format:

(list of supported <duration>s)

Syntax

Command Command type

AT+VTD=<duration> Set

AT+VTD? Read

AT+VTD=? Test

Parameters and Values

<duration> Duration of a tone.

0 95ms

1 150ms

2 200ms

3 250ms

4 300ms

5 350ms

Notes

 Reference: 3GPP TS 27.007 and TIA IS-101.