<span style="color:rgb(0,0,0)">Dear List</span><br style="color:rgb(0,0,0)"><br style="color:rgb(0,0,0)"><span style="color:rgb(0,0,0)">I'm currently facing an issue with a carrier whereby they are complaining that the via header branch parameter (sip.Via.branch == "</span><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#0033ff"><span style="color:rgb(0,0,0)">z9hG4bKcydzigwkX") in the ACK messages is not unique which results in some calls being successful and some terminating after 20 seconds as their sip proxy determines it as a duplicate request. Is there a way to make the via header branch parameter in the ACK message unique across every transaction?<br>
<br>Thanking you in advance for your assistance.<br>Phillip<br></span></span>