<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<STYLE type=text/css> <!--@import url(scrollbar.css); --></STYLE>
<META content="text/html; charset=utf-8" http-equiv=Content-Type>
<STYLE> BLOCKQUOTE{margin-Top: 0px; margin-Bottom: 0px; margin-Left: 2em} body{FONT-SIZE:12.1pt; COLOR:#001; FONT-FAMILY:宋体,serif;} </STYLE>
<META name=GENERATOR content="MSHTML 8.00.6001.19222"><BASE
target=_blank></HEAD>
<BODY
style="LINE-HEIGHT: 1.3; BORDER-RIGHT-WIDTH: 0px; MARGIN: 12px; BORDER-TOP-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px"
marginheight="0" marginwidth="0"><STATIONERY>
<DIV><FONT color=#000000 size=3 face=宋体></FONT> </DIV>
<DIV> </DIV>
<DIV align=left><FONT color=#c0c0c0 size=2 face=Verdana>2012-04-18
<DIV><FONT color=#000000 size=3 face=宋体>
<DIV style="LAYOUT-GRID: 15.6pt none" class=Section0>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">Hi:</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><?xml:namespace
prefix = o ns = "urn:schemas-microsoft-com:office:office"
/><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"> I am a college student from China. I have just started working on opensips. Now I have some questions about it, and I hope you could help me out.</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"> Our project want to add some additional functions on the sip server. The primary is when the server received an invite message from a sip phone, amd the server should get the src-ip and the des-ip of the session. Then send the src-ip and the dst-ip to another computer, in which we run a application that have the informations about the resource of the network (By the way,the server and the sip phones are all in an LAN). Then the application will tell the server whether it should allow this session. In another word, we want to add a judgement in the sip session.</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"> My question is whether the opensips could do that for me? Should I add an additional module in the opensips? Or add some funcitions in some modules whick the opensips already have? How to?</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">Thank you very much for your help!</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">Hoping for your advance.</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">Thanks & Regards,</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">Li Peng Beijing China</SPAN><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'"><o:p></o:p></SPAN></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN
style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; mso-spacerun: 'yes'">2012-04-18</SPAN></P></DIV><!--EndFragment--></FONT></DIV></FONT></DIV><FONT
size=2 face=Verdana>
<HR style="WIDTH: 122px; HEIGHT: 2px" id=SignNameHR align=left SIZE=2>
</FONT>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana><SPAN
id=_FlashSignName>GTS2010</SPAN></FONT></DIV></STATIONERY></BODY></HTML>