In the process of converting Octel 250 to 10 digit dialling. When converting their system from 7 digits on outbound local calls to 10 digits, we try to enter their outbound access code, 8+10 digits or straight 10 digits for the attendant (0 out option) it does not process the call. We reach a recording saying to try our call again. We know it is not the line/port as we can make these same calls from the Octel line/port with a regular set connected to it. There must be something in the Octel that needs to be done.?? Thanks.