This can be your router issue. Is the SIP client behind the NAT? Can you check NAT keepalive settings? As Tom mentioned, looks like the router reopens the route when it sees the outbound traffic originating from the LAN. We've had call drops on longer calls before with Polycoms and it ended up being NAT and router issue<div>
<br></div><div>Frank <br><br><div class="gmail_quote">On Fri, Apr 8, 2011 at 11:15 AM, Tom C <span dir="ltr"><<a href="mailto:mel0torme@gmail.com">mel0torme@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>Did you figure this out already?</div>
<div> </div>
<div>Changing the hostname can cause the router to assign a new IP address. If you have port forwarding set up for the old IP address, incoming SIP requests would now be lost. Making an outgoing call could convince the router to forward those ports to the new IP temporarily.<br>
<br></div><div><div></div><div class="h5">
<div class="gmail_quote">On Sun, Apr 3, 2011 at 9:54 AM, Philippe Le Toquin <span dir="ltr"><<a href="mailto:philippe@ppmt.org" target="_blank">philippe@ppmt.org</a>></span> wrote:<br>
<blockquote style="border-left:#ccc 1px solid;margin:0px 0px 0px 0.8ex;padding-left:1ex" class="gmail_quote">
<div text="#000000" bgcolor="#cccccc">Last Friday I decided to rename the hostname of the guruplug and since then I have problem with<br>incoming calls no longer going through.<br></div></blockquote></div><br>
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