Telecommunications Sensors

Beam Power Tubes by O. Schade

By O. Schade

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Authorization Table: This requires some planning before making any changes. Just as with the single Ethernet-connected cell, both ARAT and ASAT are supported in the network of Ethernet-connected cells. If the total workstation population is small and everyone is to be allowed access via any 8227, then it makes sense to have authentication disabled on all 8227s. However, for security reasons it may be desirable to take the opposite approach and have every workstation known to every 8227 by enabling ARAT/ASAT on all 8227s.

1 The Stand-Alone Cell To operate in peer-to-peer mode, workstations are configured as part of a stand-alone cell. This configuration can support 32 workstations or more with a maximum distance between them of about 180 meters in an open environment. The actual number supported is determined by the amount of traffic and frequency of activity within a cell. In a closed or semi-closed environment, the effective distance is reduced by physical factors such as relative positioning of workstations, reflective surfaces and signal absorption by walls and ceilings.

C. ARTour • It supports TCP/IP applications over a WAN using a carrier network. • It supports GSM, RD-LAP (Motorola), Mobitex (Ericsson) and Inmarsat (satellite communication) radio interfaces. Note: A 3270/5250 Emulation application is available for access to host based applications. 14 Wireless LAN Communications Note: IBM provides the software. IBM also provides wireless LAN adapters to support the Mobitex and RD-LAP interfaces. 2 PC Wireless LAN Product Overview IBM now supports a number of products which cater to the expanding Wireless LAN market.

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