AT&T MERLIN LEGEND Release 4.0 Feature Reference page 25

Feature Reference
To enter, change, or correct an account code during a call, activate the feature
and enter the account code. Only the person who enters the account code
hears the tones generated by dialing the account code number. To cancel an
account code (when permitted), activate the feature and exit without entering a
code.
With Forced Account Code Entry, if you try to make an outside call without
entering an account code, the following occurs:
If you select an outside line on an SA button (by dialing a dial-out code)
or on an ICOM button (by dialing the Idle Line Access code) without
entering an account code, the call is blocked. Depending on the type of
telephone used, this may be indicated by the programmed Account
Code Entry button flashing, the SA button going to the off/idle state, or an
intercept tone.
If you try to make an outside call on a personal line or Pool button without
entering an account code, there is no dial tone.
Considerations and Constraints
If SMDR is set to record outgoing calls only, you cannot enter an account code
for incoming calls.
The system does not validate account codes; it only checks for the number of
characters entered (maximum of 16) and for completion (dialing
programmed Account Code Entry button).
Account codes can be no more than 16 characters in length, and only the digits
0–9 and the character
With Forced Account Code Entry, you can enter account codes for incoming
calls and for incoming calls added to a conference call by using the Account
Code Entry feature. You do not have to enter account codes in these situations.
(Outgoing calls added to a conference must have an account code.)
You cannot change an account code entered from another extension.
An incoming caller cannot hear tones as account codes are entered during a
call.
An Account Code Entry button only activates and completes the account code
entry. It does not automatically enter an account code. A separate outside Auto
Dial button can be programmed with an account code number.
can be used.
Account Code Entry/Forced Account Code Entry
or pressing a
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