Here is the topology:

SIPCLIENT(Remote) ------INTERNET-----------MYFIREWALL(200.x.x.188) NATD TO----------OSBC(192.168.1.150)-----------------ASTERISK(192.168.1.250)

My Problem:

SIP CLIENTS ON MY INTERNAL SUBNET 192.168.1.X can REGISTER and MAKE CALLS PERFECTLY

REMOTE SIPCLIENTS can REGISTER PERFECTLY.....BUT WHEN I MAKE CALLS IT DROPS AFTER 3 SECONDS

WHEN I COMPARE LOGS FROM INTERNAL and REMOTE CLIENTS... I notice that the Remote Clients GIVE A RETRANSMIT 200OK and the INTERNAL Clients GIVE A ACK

Do I have to translate the IP Address??

Please Advise.... Sorry about the CAPS

Regards

Greek