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C55/C55i AT COMMAND SET Description Preliminary - Falcom

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<strong>C55</strong>/<strong>C55</strong>I <strong>AT</strong> <strong>COMMAND</strong> <strong>SET</strong> VERSION 1.00<br />

14.5 <strong>AT</strong>+VTD Tone duration<br />

Syntax<br />

Test Command<br />

<strong>AT</strong>+VTD=?<br />

Read Command<br />

<strong>AT</strong>+VTD?<br />

Write Command<br />

<strong>AT</strong>+VTD=<br />

Response(s)<br />

+VTD: (list of supported s)<br />

OK<br />

Response(s)<br />

<br />

OK<br />

Response(s)<br />

OK<br />

Reference(s) PIN ASC0<br />

GSM 07.07 ○ ●<br />

Command <strong>Description</strong><br />

This command refers to an integer that defines the length<br />

of tones transmitted with the <strong>AT</strong>+VTS command.<br />

Parameter <strong>Description</strong><br />

(num)<br />

duration of the tone in 1/10 second<br />

1(&F)...255<br />

14.6 <strong>AT</strong>+VTS DTMF and tone generation<br />

The Write command is intended to send ASCII characters or strings which<br />

cause the Mobile Switching Center (MSC) to transmit DTMF tones to a<br />

remote subscriber. It works during active voice calls only and offers the<br />

following variants:<br />

• <strong>AT</strong>+VTS= allows to send a sequence of DTMF<br />

tones with a duration defined with <strong>AT</strong>+VTD.<br />

• <strong>AT</strong>+VTS=[,] allows to send a single DTMF<br />

tone. In this case, the duration can be individually determined<br />

during the call.<br />

Syntax<br />

Test Command<br />

<strong>AT</strong>+VTS=?<br />

Write Command<br />

<strong>AT</strong>+VTS=<br />

Write Command<br />

<strong>AT</strong>+VTS=[, ]<br />

Response(s)<br />

+VTS: (list of supported s), (list of<br />

supported s)<br />

OK<br />

Response(s)<br />

OK<br />

Response(s)<br />

OK<br />

Reference(s) PIN ASC0<br />

GSM 07.07 ○ ●<br />

This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission.<br />

Page 264

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