I seem to recall TAC showing me how to hardcode the Gateway> Type H323> "Calling party IE number type unknown" value to different settings based upon where you are calling, perhaps via the Route List or Route Group.
Problem: "Calling party IE number type unknown" is hardcoded to National and calls to certain 011 International numbers fail with Nstional. Debug isdn q931 shows successful calls and unsuccesful have different isdn types.
Calling Party Number i = 0x2183, '7044914288'
Plan:ISDN, Type:National
Called Party Number i = 0x80, '3800'
Plan:Unknown, Type:Unknown