<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><span style="-webkit-text-size-adjust: auto; background-color: rgba(255, 255, 255, 0);"><font>Hi <br><br><font>I've been all over forums, the wiki, mailing lists but I just can't find the answer to my problem.<br>Perhaps the reason why I don't get the answer is that I don't properly understand what to search for? ;-)<br><br>Any way.<br><br>The problem I'm facing is that I have to present the Via: string in the INVITE in a specific manner to successfully setup my SIP trunk to a SIP enabled Siemens MSC.<br><br>It should be presented as follows:<br>INVITE sip:xxxxxxxxxxxx@<IP_ADDRESS>:5060 SIP/2.0<br>Via: SIP/2.0/UDP <IP_ADDRESS:5060>;rport;branch=z9hG4bKQ96vgD8Z1c2rN<br><br>How can I force the :5060 in the Via: uri?<br><br>Before I forget. The server is all running on Public IP's except to this specific trunk.<br>In this scenario FS is a Full-ON SBC handling media in Full Proxy.</font></font><br><br><br><font>Thank you very mu<font>ch<br><br><br><font>Kin<font>d Regards</font></font></font></font></span><br><div style="-webkit-text-size-adjust: auto; "><br></div><span style="-webkit-text-size-adjust: auto;">Sent from my iPhone</span></body></html>