Antenna - Nokia D311 User Manual

prevent unauthorized access to the network. Authentication is a service that
confirms the identity of an entity, such as a user or a computer, or confirms the
origin of a transmitted message.
The Nokia D311 PC card supports the Wired Equivalent Privacy (WEP) protocol,
which offers basic protection in WLAN. The WEP protocol utilizes the RC4
algorithm with an up to 152-bit secret key, which encrypts data before it is
transmitted over radio waves. When the wireless stations in a WLAN wish to
communicate using WEP, they must have the same WEP key in possession.
The Nokia D311 PC card is also compatible with leading Virtual Private Network
(VPN) clients over GPRS and WLAN. VPN is recommended for more secure network
access.
The Nokia D311 PC card is equipped with an integrated smart card reader. SIM
cards and smart card readers provide a tool for managing secure user
authentication in a WLAN. SIM cards also provide an easy way for users to carry an
authentication device with them. On a SIM card users can store important
information, such as WEP keys and network profiles.
The smart card reader reads the data stored on the computer chip and sends it to
the network for processing. The SIM card is protected by a PIN code; to access the
contents of the SIM card, you need to enter the correct PIN code.

Antenna

The Nokia D311 PC card antenna is inside an
extension box. In this document antenna
refers to the extension box and the antennas
inside it.
Do not cover the antenna. Unauthorized
antennas, modifications, or attachments
could damage the PC card and may violate regulations governing radio devices.
Warning: Keep all SIM cards out of reach of small children. Please refer to
the Data Security document found on the product CD-ROM for more
information on security issues.
Tip: TIPS ON EFFICIENT OPERATION: Your PC card has a built-in antenna. As
with any other radio transmitting device, do not touch the antenna
unnecessarily when the PC card is on. Contact with the antenna affects
connection quality and may cause the PC card to operate at a higher power
level than otherwise needed. Not touching the antenna area during a
connection optimizes the antenna performance.
9
Introduction