Here is example setup
Ext 4010 is public phone COS which is not allowed to call LD
The Normal users COS Override Passcode is set to 6789
I tried to call a LD call prior to entering code. From ext 4010 I dialed 917703334444 and got fast busy
From the Ext 4010 phone I dialed *906789 it took a couple seconds and then the line hung up.
I then dialed the same LD call and it worked.
You can only place one call after entering the *90 code, after that it defaults back to the normal COS.
Hope that helps.
Thanks Mark. It works. Different from any other system I have worked with.