into your device. Call restrictions and call forwarding cannotbe active at the same time.You need your PIN2 code to activate and deactivate fixeddialing or edit your fixed dialing contacts. Contact yourservice provider for your PIN2 code.Select Options and from the following:• Activate fixed dialing — Activate the fixed dialing.• Deactivate fixed dialing — Deactivate the fixed dialing.• New SIM contact — Enter the contact name and phonenumber to which calls are allowed.• Add from Contacts — Copy a contact from the list ofcontacts to the fixed dialing list.To send text messages to the SIM contacts while the fixeddialing service is active, you need to add the text messagecentre 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.To view certificate details, open a certificate folder, and selecta certificate and Options > Certificate details.One of the following notes may appear:• Certificate not trusted — You have not set anyapplication to use the certificate. You may want to changethe trust settings.• Expired certificate — The period of validity has endedfor the selected certificate.• Certificate not valid yet — The period of validity has notyet begun for the selected certificate.• Certificate corrupted — The certificate cannot be used.Contact the certificate issuer.© 2009 Nokia. All rights reserved. 131
