I've the following problem after move a VOIP DMZ on PALO ALTO 2050 5.0.11:
If I dial in from outside, then the answer is almost immediate, so that is fine, but when I call out the line is dead for 35-40 seconds before a ringing tone is heard
I don't uderstand this delay? I try to do an application override but the issue stay. I can't see any drop on the firewall. Somebody know this problem?
You do not say if it is a SIP or H323 VOIP setup? I ask because we had all kinds of problems with SIP through a PA200 with lines dropping and FORBIDDEN messages. As recommended we disabled sip alg and the problem still persisted.
The problem was raised with PA (we sent one of our phones to their test labs in Holland!!). Their engineer finally tied down the problem to the SIP UDP session timeouts. The default on a PA is 30 seconds but our phones were using 45 seconds. Once we changed the timeout to 1 minute the problem went away. It might be coincidence but you are experiencing times to work of around 35 to 40 seconds
Hope this helps.
we had the same issue with Cisco phones. With delay ring and no voice. With application override it works perfectly:
As you can see... from the phone (policies *-1-1; -2-1; 3-1) to our voice network and the other way around (policies *-1-2; -2-2; 3-2). Just create customs app with e.g.: sip-override: udp/5060 ; rtcp-rtp: udp/16384-32767 ; sccp-override: tcp/2000. We are using the policies with the Version 6 as well...
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