Symbol MC9000-G Product Reference Manual page 169

The ESSID is the 802.11 Extended Service Set Identifier. The ESSID is a 32-character
(maximum) string identifying the WLAN. The ESSID assigned to the mobile computer is
required to match the AP ESSID for the mobile computer to communicate with the AP.
4. In the Operating Mode: drop-down list, select the operating mode:
Infrastructure
Ad Hoc
5. In the Country: drop-down list, select the country of operation for the mobile computer. This
ensures the mobile computer is using country code information compatible with the country
code data used by the associated AP. Select International if using the mobile computer with
a non-Symbol AP or a pre AP-4131 model.
6. Select the Encryption tab to set the mobile computer profile security level.
The mobile computer supports Open System (no encryption), 40-bit Shared Key, 128-bit
Shared Key and Kerberos encryption algorithms. The absence of a physical connection
makes wireless links vulnerable to information theft. Encryption is an efficient method of
preventing data theft and improving data security.
Select Infrastructure to enable the mobile computer to transmit and receive data
with an AP. Infrastructure is the mobile computer default mode when Mobile
Companion initially appears.
Select Ad Hoc to enable the mobile computer to form its own local network where
mobile computers communicate peer-to-peer without APs using a shared ESSID.
Select the Long preamble checkbox if the mobile computer and its profile are using
a long preamble when transmitting data. A long preamble is approximately 8 bytes
of the packet header attached to the packet prior to transmission. Devices in Ad Hoc
mode are required to use the same preamble length to interoperate. The mobile
computer initiating the Ad Hoc network sets the channel (using the Channel drop-
down list) used by each peer in the Ad Hoc network.
Figure 6-4. Encryption Tab
Spectrum24 Network Configuration
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