The Buzz can be initiated by pressing the buzz key or by dialing an access code.

If the Buzz key is pressed the Buzz ring acknowledges the successfully signalling of the buzzed party.

When the access code is dialed, the initiator gets a positive acknowledge tone.

In each case if the Buzz is not carried out, e.g. because there is no destination administered or the target's status does not allow a Buzz, the initiating party gets the display 'Buzz not possible'. If the Buzz was initiated by the access code, the buzzing party gets the display and a negative acknowledge tone. The Buzz key can be used nearly independant from the device status, e.g. while a call ist established or while the telephone is ringing and further more situations. The target device can be buzzed in almost the same manner. Multiple Buzz in a short time can be initiated, especially if the Buzz key is used.