<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=SV link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I suppose you would use just normal ISUP to do the call via GMSC. To act as a VMSC is a completely different thing and would not be possible to accomplish on an asterisk without extensive development in which case you would also need MAP handling.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>/Sverker<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> asterisk-ss7-bounces@lists.digium.com [mailto:asterisk-ss7-bounces@lists.digium.com] <b>On Behalf Of </b>mosbah abdelkader<br><b>Sent:</b> den 8 februari 2011 12:15<br><b>To:</b> asterisk-ss7@lists.digium.com<br><b>Subject:</b> [asterisk-ss7] Using libss7 to connect to an GMSC or STP<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi,<br><br><br>As I understand, libss7 implements MTP and ISUP protocols over DAHDI compatible hardware.<br><br><br>I need to establish a call from Asterisk to a GSM subscriber by initiating a call directly over the GMSC or STP that connects to MSC of the subscriber. Here, I suppose that Asterisk acts as a VMSC in the telco carrier of the subscriber.<br><br><br>For signaling part of the call, I suppose that MAP protocol will be used first to get some information about the subscriber and then ISUP will be used to initiate the call.<br><br><br>For voice part, DAHDI hardware will be used to carry the data.<br><br><br>My questions are:<br><br> 1- Are the information above correct?<br> 2- Can libss7 be used for ISUP and voice part of my project?<br> 3- Is there any information regarding connecting Asterisk to a GMSC or STP?<br><br><br>Please help.<br><br>--<br>BR<br>Abdelkader Mosbah.<o:p></o:p></p></div></div></div></body></html>