No SIP Registration after WAN reconnect

[phaack]

I have a problem with my pfsense. After the WAN reconnects the SIPs in my 3CX PBX are not connecting.
After a reboot of the pfsense everything is working again until the next WAN reset.

I set up the pfsense by the guide of 3CX:

http://www.3cx.com/blog/voip-howto/pfsense-firewall/

I was not able to solve the problem.
Today I added a rule to keep the Port 5060 static, but that didn't do the trick.

Can anyone help me out?

[CM350]

Up!

I have the same question :)

After reboot or reset from the pfsense the phones can do outbound calls but no incoming.

[chpalmer]

Look at the states to your ata device.

Build a firewall rule on the WAN tab with your SIP server as the source and your ATA/VOIP device LAN address as the destination.
Your ports may vary especially if your SIP server also does your actual RTP streams