<p>Hi you,</p><p>your question is too general please be more specific;<br></p><p>BR.</p><br><div><span class="gmail_quote">On 6/30/08, <b class="gmail_sendername">Nguyen Trung Thanh</b> &lt;<a href="mailto:thanhnt@cdit.com.vn">thanhnt@cdit.com.vn</a>&gt; wrote:</span><blockquote class="gmail_quote" style="margin:0;margin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">






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<div><font face="Arial" size="2">Dear all,</font></div>
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<div><font face="Arial" size="2">I have used IP-PBX based asterisk for some year. 
Now, I want to upgrade from C0 (4line) to E1 card. Plz let me know the below 
issues according to SS7/R2:</font></div>
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<div><font face="Arial" size="2">- The architecture;</font></div>
<div><font face="Arial" size="2">- The hardware;</font></div>
<div><font face="Arial" size="2">- The module/software needed.</font></div>
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<div><font face="Arial" size="2">Tks &amp; Rgds</font></div></div>
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