[asterisk-users] Asterisk not receiving call from VPN address

[Paul Belanger]

On Tue, Jan 21, 2014 at 12:40 AM, David Cunningham
<dcunningham at voisonics.com> wrote:
> Hi Paul,
>
> Using ngrep/tcpdump shows the packet clearly going from the Kamailio server
> and arriving at the Asterisk server. This is why it's a mystery that
> Asterisk doesn't see the call coming in. We tried removing the firewall (so
> iptables -L shows no rules at all) but that didn't help unfortunately.
>
You might think Kamailio is transmitting it to Asterisk, however
without looking at the actually routing tables on Kamailio you'll
never know if it actually made it to Asterisk.  Again, we need a pcap
trace on both Kamailio and Asterisk, plus what your routes look like
(route -n), for a call.  It will show us clearly what is happening.

This all sounds like a routing issue, so your network admins should be
able to help troubleshoot.