Call Barring (Network Service) - Nokia 6600 User Manual

T o o l s
• want to decrease the risk of
viruses or other malicious
software and be sure of the
authenticity of software when
downloading and installing
software.
Important: Even if the use
of certificates makes the
risks involved in remote
connections and software
installation considerably
smaller, they must be used
correctly in order to benefit
from increased security. The
existence of a certificate
does not offer any
protection by itself; the
certificate manager must
contain correct, authentic,
or trusted certificates for
increased security to be
available.
Important: Certificates
have a restricted lifetime. If
Expired certificate
Certificate not valid yet
shown even if the certificate
should be valid, check that
the current date and time in
your phone are correct.
86
or
is
Copyright © 2004 Nokia. All rights reserved.
Changing the trust settings of an
authority certificate
• Scroll to an authority certificate
and select Options
settings. Depending on the
certificate, a list of the
applications that can use the
selected certificate is shown. For
example:
Application manager
certificate is able to certify the
origin of new software.
Internet / Yes - the certificate is
able to certify e-mail and
imaging servers.
Important: Before changing
these settings, you must
make sure that you really
trust the owner of the
certificate and that the
certificate really belongs to
the listed owner.
Call barring
(network service)
Call barring allows you to restrict
the making and receiving of calls
with your phone. For this function,
you need the barring password,
which you can obtain from your
service provider.
1. Scroll to one of the barring
options.
→
Trust
/ Yes - the