3Com NBX 100 Administrator's Manual page 245

Forced / Verified Mode
Forced / Unverified Mode
Unforced / Verified Mode
Unforced / Unverified Mode
Read the following sections for detailed information about each of these
modes.
Forced / Verified Mode
In Forced / Verified mode, the NBX system first forces the phone user to
enter an account code, then verifies that the code is correct, before
routing an outgoing call. The NBX system verifies the account code
against a master list that has been set up by the System Administrator.
To place an outgoing call, the user dials the outbound number in either of
the following ways:
Outbound number + # + Account code + #
Feature + 888 + Account Code + # + Outbound number
In the first instance, the user might not know or remember that an
account code is necessary and dial only the outbound number. In this
case, the phone prompts the user to enter an account code after a short
period.
If the account code is valid, the Feature Success tone plays and the call is
routed.
If the account code is invalid:
On a phone that has an LCD, the invalid account code is shown and
the user is prompted again to enter the account code. After three
unsuccessful attempts to enter the account code, the user must start
over by reentering the outbound number and account code.
On a phone that does not have an LCD, the Feature Error tone is
played and the user must reenter the entire digit sequence.
Emergency calls such as 911 can always be dialed without also entering
an account code and are immediately routed.
Account Codes 245