Nokia E75 - Manual (Page 136)

Fixed dialing
Select Menu > Contacts and Options > SIM contacts >
Fixed dial contacts .
With the fixed dialing service, you can restrict calls from your
device to certain phone numbers. Not all SIM cards support
the fixed dialing service. For more information, contact your
service provider.
When fixed dialing is activated, calls may be possible to the
official emergency number programmed into your device.
1. To restrict calls from your device, select
Options > New
SIM contact , and enter the contact name and phone
number to the list of numbers to which calls are allowed,
or select Add from Contacts to copy the contact from the
contacts list. To restrict calls by a country prefix, enter the
country prefix in the list of numbers. All phone numbers
to which calls are allowed must start with this country
prefix.
2. Select Options > Activate fixed dialing . You need your
PIN2 code to activate and deactivate fixed dialing or edit
your fixed dialing contacts. If you do not have the code,
contact your service provider. To cancel the service, select
Options > Deactivate fixed dialing .
Tip: To send text messages to the SIM contacts while
the fixed dialing service is active, you need to add the
text message center number to the fixed dialing list.
Certificate manager
Select Menu > Control 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
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