Psion Teklogix Vehicle-Mount Computer 8255, User Manual, Page: 294 / 348

Appendix D:Radio Parameters
TRX7441 802.11b DS SS Radio Parameters
D-10
Teklogix 7035, 8255 & 8260 Terminals User Manual
Network
The value assigned for this parameter – Infra or Adhoc – configures the radio to
operate in either an Ad Hoc (“Adhoc”) or Infrastructure (“Infra”) network. In an Ad
Hoc network, terminals pass data directly to other terminals – an access point is not
required. In an Infrastructure network, terminals must pass data through an access
point – terminals cannot communicate directly with other terminals in the network.
Channel
Important: The “Channel” parameter takes effect only when the “Network”
parameter is set to
Adhoc
.
The channel number you choose must be the same for all terminals on the network
that are set to
Adhoc
.
Mixed Cells
When this parameter is set to “Y”, the 7035 can communicate with Cisco access
points that have encryption set to ‘optional’ – that is, whether or not encryption is
available, the terminal will be able to communicate with a Cisco access point. If
‘Mixed Cells’ is set to “N”, the 7035 can only communicate with Cisco access
points that have full encryption enabled.
Note: This parameter should be set to “N” when communicating with a Teklogix
9150 access point.
Auth Type
The value assigned for this parameter determines the type of authentication used.
Choosing None means no authentication is used.
If
Shared
key authentication is selected, the access point sends a known unen-
crypted challenge packet to the TRX7441 Cisco radio which then encrypts the
packet and sends it back to the access point. The access point attempts to decrypt the
encrypted packet and forwards an authentication response packet back to the radio,
indicating the success or failure of the decryption. If the packet is successfully
encrypted/decrypted, the user is authenticated.