[Freeswitch-users] Occasional Dropped call at 30 seconds

Nathan Neulinger nneul at mst.edu
Fri May 10 14:17:07 UTC 2019

It doesn't address your actual issue - but for the pcap - as long as you can respond in a reasonable timeframe for the 
hit, you can use the tcpdump file rotation options "-C size -W count" to just set up a capture that will rotate through 
files. It'll create a lot of capture, but it will only keep the last N files.

-- Nathan

*From:* Sean Devoy <sdevoy at bizfocused.com>
*Sent:* Fri, May 10, 2019 9:10 AM CDT
*To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
*Subject:* [Freeswitch-users] Occasional Dropped call at 30 seconds

> Hi all,
> I have a problem with one client where the call is fine and they can talk for almost exactly 30 seconds, then the log 
> says originating phone (of FS) hung up.  This only happens like 1% to 5% of the time.
> The phones are Mitel 6867i and 6865i which must use TCP not UDP.  The firewall is a $#!#&* SonicWall.  I am 99% 
> convinced it is the firewall.  It happened once on a Cisco phone using UDP so I increased the firewall UDP timeout.  I 
> already have keep-alive set to 30 seconds.  It has not recurred on UDP phones since.
> Any ideas on something to do to Mitel config or SonicWall that might prevent a drop after 30 seconds?
> I have considered PCAP, but with so few occurrences I am worried about PCAP size before I get a “hit.”
> Thanks,
> Sean
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Nathan Neulinger                            nneul at mst.edu
Missouri S&T Information Technology         (573) 341-6679
System Administrator - Architect            (573) 612-1412
System and Desktop Infrastructure Team Manager

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