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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>Transfer data through phone line</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/16174/transfer-data-through-phone-line</link><description> dear sir; 
i want to use a 8051 for sending data through phone line , i want a idea about how design it and how write a program for it 
please guide me 
best regards 
javad majd </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Transfer data through phone line</title><link>https://community.arm.com/thread/71357?ContentTypeID=1</link><pubDate>Fri, 04 Apr 2003 06:10:23 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:1acf4f1e-458d-4c57-9fba-0bed13d0597b</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;One very important thing Graham omitted:&lt;br /&gt;
&lt;br /&gt;
What are the &lt;i&gt;&lt;b&gt;LEGAL&lt;/b&gt;&lt;/i&gt; and/or regulatory requirements in your territory?&lt;br /&gt;
&lt;a href="http://www.8052.com/forum/read.phtml?id=36214" target="_blank"&gt;http://www.8052.com/forum/read.phtml?id=36214&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
For embedded modem modules, look here:&lt;br /&gt;
&lt;a href="http://www.multitech.co.uk/PRODUCTS/~Modems/Embedded/" target="_blank"&gt;http://www.multitech.co.uk/PRODUCTS/~Modems/Embedded/&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Transfer data through phone line</title><link>https://community.arm.com/thread/40070?ContentTypeID=1</link><pubDate>Fri, 04 Apr 2003 03:56:34 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:2bb3ca35-5bc5-436d-ad0f-f16fedecb1f1</guid><dc:creator>Graham Cole</dc:creator><description>&lt;p&gt;This is not a trivial problem.&lt;br /&gt;
&lt;br /&gt;
Consider:&lt;br /&gt;
&lt;br /&gt;
How much data do you want to send in each direction?&lt;br /&gt;
&lt;br /&gt;
How fast do you need the data to be sent?&lt;br /&gt;
&lt;br /&gt;
Do you need to initiate a call, pick up a call or both?&lt;br /&gt;
&lt;br /&gt;
How much do you want to spend on the hardware?&lt;br /&gt;
&lt;br /&gt;
With this information you should be able to choose between the following:&lt;br /&gt;
&lt;br /&gt;
a) Off-the-shelf stand-alone, full featured modem.&lt;br /&gt;
&lt;br /&gt;
b) Built-in full featured modem.&lt;br /&gt;
&lt;br /&gt;
c) Built-in limited features modem.&lt;br /&gt;
&lt;br /&gt;
d) Bespoke tone generator/decoder.&lt;br /&gt;
&lt;br /&gt;
e) DTMF generator/decoder.&lt;br /&gt;
&lt;br /&gt;
f) Something else.&lt;br /&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>