<div dir="auto">Calls ending consistently at/around 30 seconds is almost a always a lack of rtp (audio) on some endpoint. </div><div dir="auto">Check the SDPs on both sides and make sure they both are reachable from both sides.</div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 12 Nov 2020 at 23:08, Dion Phillips <<a href="mailto:dion@openlogic.com.au">dion@openlogic.com.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Hi<br>
<br>
I have Freeswitch setup on a cloud server and Grandstream phones in the <br>
office connected successfully to the switch. I have never had any issues <br>
with NAT causing the phones or Freeswitch to lose their connection. The <br>
phones have "keep-alive" set so are always sending "OPTIONS" messages to <br>
Freeswitch to keep the ports open. I don't use the default 5060 port for <br>
the internal profile on the Freeswitch side.<br>
<br>
The office has a Fortigate firewall and a Opnsense box that is used to <br>
connect the office to a DC cloud server.<br>
<br>
The issue is that when a second call comes into the office, it will <br>
terminate after 32 seconds. There are only 2 voip lines so max 2 calls <br>
at a time. This only occurs if the second call is inbound. What is even <br>
more weird is that if the second call is answered by the phone that is <br>
already on a call, then this does not happen. If the second call is <br>
outbound, there is also no issue.<br>
<br>
I have done a sip trace and the calls progress correctly from CALL SETUP <br>
-> IN CALL -> COMPLETED. The logfile however has an ORIGINATOR_CANCEL <br>
message when the call is terminated. I have two phones at my house <br>
connected to the same PBX and when I use them to test, I cannot get the <br>
call to drop which suggest to me there is something in the office that <br>
is dropping packets but only on the second call.<br>
<br>
If the firewall was an issue, why would the first incoming call work and <br>
all outgoing calls work also? I have tried creating a rule on the <br>
firewall to allow all traffic from the Freeswitch IP but that make no <br>
difference. If the SIP trunk was the issue why would the home phones work.<br>
<br>
Can anyone give me some pointers on what I should be looking for in a <br>
SIP trace or tcpdump or loglfile or tea leaves?<br>
<br>
Thanks<br>
Dion.<br>
<br>
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<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a></blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Regards,</div><div><br></div>David Villasmil<div>email: <a href="mailto:david.villasmil.work@gmail.com" target="_blank">david.villasmil.work@gmail.com</a></div><div>phone: +34669448337</div></div></div>