IAX working one way

[mlkerby]

IAX issue
I’m trying to connect 2 Trixbox via the internet; both of them are behind Sonicwall firewalls. The following ports are forwarded to each BOX respectively UDP 5060, UDP 4569, UDP 10000-20000. Box B is able to call Box A with no issue. Whenever Box A tries to call the message “All circuit are busy now” is heard. The command iax2 show peers gives the following:
BoxB/luck IP address BOX B 255.255.255.255 4569 unreachable
Below is the configuration of each box:
BOX A
Outbound CallerID: BoxA
Dial Rules: 6|xxx
Trunk Name: BoxB
PeerDetails: host=IP Box B
Username=luck
Secret=12345
Type=peer
Qualify=yes
Disallow=all
Allow=ulaw&g729
Context=from-internal
User Context luck
Secret=12345
Type=user
Context=from-internal

Outbound route Dial patterns 6|xxx
Trunk sequence IAX2/BOXB

BOX B
Outbound CallerID: BoxB
Dial Rules: 4|xxxx
Trunk Name: BoxA
PeerDetails: host=IP Box A
Username=luck
Secret=12345
Type=peer
Qualify=yes
Disallow=all
Allow=ulaw&g729
Context=from-internal
User Context luck
Secret=12345
Type=user
Context=from-internal

Outbound route Dial patterns 4|xxxx
Trunk sequence IAX2/BOXA

 

[mlkerby]

There was an issue with the firewall. The peer status is OK now but the Box A still cannot call Box B.

 

[busster]

have you checked your sip_nat.conf files? Also verfiy gateway settings.