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4.8 SIM SERVICES ( NOKIA OPERATOR WIRELESS LAN)
The Nokia Operator Wireless LAN solution complements wide-area cellular data access,
such as GPRS, by offering a highly cost-effective solution for indoor wireless broadband data
access. Nokia Operator Wireless LAN provides mobile business subscribers with a fast
Internet and intranet access that is automatically available for all customers who have the
Nokia D211 and a GSM subscription. A regular SIM card that is inserted into the Nokia D211
is used for user authentication and billing. This makes the solution extremely easy to use and
implement. Combined with a SIM-based user authentication and billing, the Nokia Operator
Wireless LAN solution allows the mobile operator to implement fast and cost-effective
wireless Internet access for mobile laptop users who have a cellular subscription.
Furthermore, the solution provides roaming between different operator networks. Initially this
network service will be offered at airports, railway stations, hotels, business parks, and even
in large offices - wherever travelling professionals use their laptops and need network
connections.
The Nokia Operator Wireless LAN solution offers several benefits:
• Fast mobile broadband service for mobile laptop users. Subscriber management and billing
based on a GSM SIM card, which significantly improves the terminal's roaming
capabilities.Access to several public operator networks all over the world, seamless operator-
to-operator roaming.
• Useful "mobile laptop solution" which complements GPRS data services in public places.
• Mobile broadband service to the Internet and corporate data in public places (airports,
hotels, etc.).
• Secure wireless IP access to corporate networks. The Nokia Operator Wireless LAN
solution supports all legacy VPN solutions. Therefore the user may establish a highly secure
end-to-end encrypted IP tunnel to the corporate network via a public access zone.
• Offers the mobile operator an easy and cost-effective way to enter the new mobile laptop
market segment.
• Allows for integrated billing where cellular operators offer wireless LAN services to
individuals as well as corporate customers.
When using a VPN client or personal firewall software, the VPN / firewall policy should allow
sending and receiving certain network messages in clear text so that SIM services will work
smoothly. In order to allow the "SIM services" protocol packets between the wireless station
(the Nokia D211) and the Nokia P022 Access Controller, allow traffic in clear text format to
and from all hosts in port UDP/1340.
Note: If the VPN policy cannot be configured to allow SIM services traffic, SIM
services can still be used. In this scenario, the Nokia D211 user needs to
authenticate to the SIM services via an access controller before opening the VPN
connection to the wireless station. In addition, the users should not use the
"Advanced Connection Controlling" setting on the wireless terminal.
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