h323 problem one way audio

Hi guys,
i really need some help with one way audio with h323 protocol.
I’ve already disabled ip firewall services ports as shown on internet.
I’ve a CCR as firewall, with this rules.

X.X.X.X public ip
192.168.2.0/23 first LAN
192.168.0.0/23 second LAN

alcatel lucent pbx1 ip: 192.168.1.250
alcatel lucent pbx2 ip: 192.168.2.250
(located in 2 different area, linked by ptp radio)

this is my rules:

\ip firewall nat
add action=src-nat chain=srcnat src-address=192.168.2.0/23 to-addresses=
X.X.X.X
add action=src-nat chain=srcnat src-address=192.168.0.0/23 to-addresses=
X.X.X.X

\ip firewall connection ENABLED

\ip address
add address=192.168.1.3/23 comment=Lan_Sede interface=ether3 network=
192.168.0.0
add address=192.168.2.2/23 comment=Lan_Interna interface=ether2 network=
192.168.2.0
add address=X.X.X.X/29 interface=ether1 network=X.X.X.Y

all work fine, but when i called from an internal to another i cannot heard him, but him can heard me.
if i call in the same area it’s all ok.

if i disable nat rules, i hear all without problem.

I think that the problem is the nat over h323 protocol.

any ideas?

nobody could help me? :frowning:

Are you using (or can you configure) symmetric RTP ports?
This way audio in and audio out will use same port-pair, so it can traverse statefull firewalls without h323 helper.