With the fixed dialling service, you can restrict calls from your device to certain phone
numbers. Not all SIM cards support the fixed dialling service. For more information,
contact your service provider.
When security features that restrict calls are in use (such as call barring, closed user
group, and fixed dialling), calls may be possible to the official emergency number
programmed into your device. Call barring and call diverting cannot be active at the
same time.
You need your PIN2 code to activate and deactivate fixed dialling or edit your fixed
dialling contacts. Contact your service provider for your PIN2 code.
Select Options and from the following:
Activate fixed dialling — Activate the fixed dialing.
Deactivate fixed dialling — Deactivate the fixed dialing.
New SIM contact — Enter the contact name and phone number to which calls are
allowed.
Add from Contacts — Copy a contact from the list of contacts to the fixed dialling list.
To send text messages to the SIM contacts while the fixed dialling service is active, you
need to add the text message centre number to the fixed dialling list.
Certificate manager
Select Menu > Ctrl. panel > Settings and General > Security > Certificate
management.
Digital certificates are used to verify the origins of software but do not guarantee safety.
There are four different types of certificates: authority certificates, personal certificates,
trusted site certificates, and device certificates. During a secure connection, a server
may send a server certificate to your device. Upon receipt, it is checked through an
authority certificate stored in your device. You receive notification if the identity of the
server is not authentic or if you do not have the correct certificate in your device.
You can download a certificate from a web site, or receive a certificate as a message.
Certificates should be used when you connect to an online bank or a remote server to
transfer confidential information. They should also be used if you want to reduce the
risk of viruses or other malicious software, and to check the authenticity of software
when you download and install software to your device.
Tip: When you add a new certificate, check its authenticity.
View certificate details
You can only be sure of the correct identity of a server when the signature and the
validity period of a server certificate have been checked.
Security and data management 151
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