OpenPhone 71/73/75 System Telephones Keypad Extensions311.3.10 Automatic ExitMenuCards close automatically under the following conditions:■ In the idle or connection state, if you receive a call and accept it by lifting thehandset or pressing a key.■ In the connection state, if you make inputs that require a new connection-dependent MenuCard (e. g. you pressed the R-key R to make an enquirycall; see the section entitled Telephoning starting on page 37).■ If you press a key that invokes a MenuCard other than the one displayed.All inputs that have been saved in the MenuCards remain intact when you exit themenu.1.4 Keypad ExtensionsWith a keypad extension, you can extend your system telephone OpenPhone 73/73 IP and OpenPhone 75/75 IP with additional free programmable keys. The mainmenu and call number functions can be stored on these keys. In addition, thesystem administrator can program call keys (trunk keys, team keys, busy keys ordirect-call keys) over the configuration software of the communications system.Up to three keypad extensions can be connected to each system telephone: eitherthree keypad extensions of the model KeyExtension 73P or three keypad exten-sions of the model KeyExtension 75D. A combination of these keypad extensionsis, however, not possible.
