The telephone system can associate account codes of up to 6 digit with for incoming and outgoing external calls. An account code is typically used to identify a department, project or client for charge-back or tracking purposes.

All users can enter an account code to be associated with a call. This is called voluntary account code entry. In this case the account code entered is not validated against the list of account codes set in the telephone system.

Some users can be required to always enter an account code when making external calls. This is called forced account code entry. In this case the account code entered is validated against the list of account codes set in the telephone system and the call only allowed if a matching code is found.  

To enter an account code

1.After starting an external call, for example by dialing the external dialing prefix, dial #12.

2.Enter an account code by dialing the account code using the telephone's dial pad.

3.Continue with the call.