Fixed dialingSelect Menu > Contacts and Options > SIM contacts >Fixed dial contacts.With the fixed dialing service, you can restrict calls from yourdevice to certain phone numbers. Not all SIM cards supportthe fixed dialing service. For more information, contact yourservice provider.When fixed dialing is activated, calls may be possible to theofficial emergency number programmed into your device.1. To restrict calls from your device, select Options > NewSIM contact, and enter the contact name and phonenumber to the list of numbers to which calls are allowed,or select Add from Contacts to copy the contact from thecontacts list. To restrict calls by a country prefix, enter thecountry prefix in the list of numbers. All phone numbersto which calls are allowed must start with this countryprefix.2. Select Options > Activate fixed dialing. You need yourPIN2 code to activate and deactivate fixed dialing or edityour fixed dialing contacts. If you do not have the code,contact your service provider. To cancel the service, selectOptions > Deactivate fixed dialing.Tip: To send text messages to the SIM contacts whilethe fixed dialing service is active, you need to add thetext message center number to the fixed dialing list.Certificate managerSelect Menu > Control panel > Settings and General >Security > Certificate management.Digital certificates are used to verify the origins of softwarebut do not guarantee safety. There are four different types ofcertificates: authority certificates, personal certificates,trusted site certificates and device certificates. During asecure connection, a server may send a server certificate toyour device. Upon receipt, it is checked through an authoritycertificate stored in your device. You receive notification ifthe identity of the server is not authentic or if you do not havethe correct certificate in your device.You can download a certificate from a web site, or receive acertificate as a message. Certificates should be used whenyou connect to an online bank or a remote server to transferconfidential information. They should also be used if youwant to reduce the risk of viruses or other malicious software,and to check the authenticity of software when youdownload and install software to your device.Tip: When you add a new certificate, check itsauthenticity.View certificate detailsYou can only be sure of the correct identity of a server whenthe signature and the validity period of a server certificatehave been checked.Security and data management© 2008 Nokia. All rights reserved.136
