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HC25 AT Command Set - Portech.com.tw

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<strong>HC25</strong> <strong>AT</strong> <strong>Command</strong> <strong>Set</strong><br />

4.3 <strong>AT</strong>&D<br />

s<br />

4.3 <strong>AT</strong>&D <strong>Set</strong> circuit Data Terminal Ready (DTR) function mode<br />

The <strong>AT</strong>&D determines how the TA responds when circuit 108/2 (DTR) is changed from ON to OFF during data<br />

mode.<br />

Syntax<br />

Exec <strong>Command</strong><br />

<strong>AT</strong>&D[]<br />

Response(s)<br />

OK<br />

Reference(s) PIN USB0-MDM USB0-APP Last<br />

V.250 + + + -<br />

Parameter Description<br />

(num)<br />

[0] TA ignores status of DTR.<br />

1 ON->OFF on DTR: Change to <strong>com</strong>mand mode while retaining the connected<br />

call.<br />

2 (&F) ON->OFF on DTR: Disconnect data call, change to <strong>com</strong>mand mode. During<br />

state DTR = OFF auto-answer is off.<br />

<strong>HC25</strong>_<strong>AT</strong>C_V01.200 Page 65 of 290 7/25/07<br />

Confidential / Released

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