The smart card can be inserted or removed in any telephone state (free, busy, etc.).

You can manipulate the user interface to identify a user on the basis of a smart card (Local Security Check Procedure) and card ID with the help of the SmartCard Access Application (SCAA).

The SmartCard Access Application (SCAA) switches the telephone to non-voice state (the non-voice LED lights up) to let you manipulate the display.

The smart card ID digits entered are not shown on the display. The end-of-dialing criterion (end-of-dialing code, such as, "#" or number of ID digits) can be set in the SmartCard Access Application (SCAA).

Following successful authentication, the SmartCard Access Application (SCAA) starts up an application on the server that in turn activates the "mobile station" feature for the user that used the smart card for identification and authentication. In contrast to Optiset E chip cards, you no longer need to enter a station number for smart cards.

Once a smart card is inserted and the "mobile station" feature is successfully activated, the privileges and properties (membership of DPLN groups, ITR groups, etc.) associated with the smart card user can be used for the next call or station activities. This also applies if you insert a smart card during a connection that was established with another smart card or "Manual PIN".