I have a Audiocodes MP-114 FXO analog gateway. When I dial into one of the numbers assigned to it,I get a second dial tone and then it disconnects shortly after. Is there something that needs to be done in the PBX as well as another configuration issue. I have tried to get assitance rom audiocodes and they pushed me off on the company I purchased it from. Does anyone have an INI file for this set up ?