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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>interfcing gsm modem with rs232</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/20105/interfcing-gsm-modem-with-rs232</link><description> 
hello, 
i need a help 
i am connecting a gsm modem to micro controller and called to that
modem frm a mobile, by using AT command i can receive it, when the
called person pressing some key for ex if he is presses &amp;#39;1&amp;#39; key ,then
that number has to pass</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: interfcing gsm modem with rs232</title><link>https://community.arm.com/thread/47643?ContentTypeID=1</link><pubDate>Mon, 22 Jan 2007 02:05:01 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:c7a64ef2-dbd3-4d09-a9a6-53bd65b84f9b</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
I don&amp;#39;t think DTMF signalling works &lt;i&gt;&lt;b&gt;to&lt;/b&gt;&lt;/i&gt; a GSM
terminal.&lt;/p&gt;

&lt;p&gt;
Therefore, I think you&amp;#39;ll have to use SMS or a Data call...&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>