74 ©2000 Nokia Mobile Phones. All rights reserved.Closed user group (Menu 4-5-4)This network service specifies the group of people whom you cancall and who can call you. Network default resets the phone touse a user group the SIM card owner has agreed upon with the serv-ice provider. A closed user group is indicated by the icon .Note: When calls are limited to a Closed user group, calls may bepossible to certain emergency numbers in some networks (e.g. 112or other official emergency number).Security level (Menu 4-5-5)This menu allows you to set the phone security level on to avoid un-authorised use of the phone. You need the security code to set thesecurity level. See “Protecting the phone with the security code” onpage 79.Note: When you change the security level, all the recent callslists are cleared.Change of access codes (Menu 4-5-6)With this menu you can change the access codes; security code, PINcode and PIN2 code. These codes may only include the characters 0to 9. The phone prompts you to enter the current code and the newcode. It also prompts you to verify the new code.Note: Avoid using access codes similar to the emergency numbers,such as 112, to prevent accidental dialling of the emergency number.Restore factory settings(Menu 4-6)Within this menu you can reset the menu settings to their originalvalues. The security code is needed for this function.
