X-Micro PCI Adapter fxmicro Manuale Utente

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Gateway: a device that interconnects networks with different, incompatible 
communication protocols. 
HEX: Hexadecimal, HEX, consists of numbers from 0 – 9 and letters from A – F. 
IEEE: The Institute of Electrical and Electronics Engineers, which is the largest 
technical professional society that promotes the development and application of 
electrotechnology and allied sciences for the benefit of humanity, the advancement of 
the profession. The IEEE fosters the development of standards that often become 
national and international standards. 
Infrastructure: An infrastructure network is a wireless network or other small 
network in which the wireless network devices are made a part of the network through 
the Access Point which connects them to the rest of the network. 
ISM Band:
 The FCC and their counterparts outside of the U.S. have set aside 
bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band.   
Spectrum in the vicinity of 2.4GHz, in particular, is being made available worldwide. 
MAC Address: Media Access Control Address is a unique hex number assigned by 
the manufacturer to any Ethernet networking device, such as a network adapter, that 
allows the network to identify it at the hardware level. 
Multicasting: Sending data to a group of nodes instead of a single destination. 
Multiple Bridge – One of the additional AP operating modes offered by 54Mbps 
Access Point, which allows a group of APs that consists of two or more APs to 
connect two or more Ethernet networks or Ethernet enabled clients together. The way 
that multiple bridge setups is based on the topology of Ad-Hoc mode. 
Node: A network junction or connection point, typically a computer or workstation. 
Packet: A unit of data routed between an origin and a destination in a network. 
PLCP: Physical layer convergence protocol 
PPDU: PLCP protocol data unit 
Preamble Type: During transmission, the PSDU shall be appended to a PLCP 
preamble and header to create the PPDU. Two different preambles and headers are 
defined as the mandatory supported long preamble and header which interoperates 
with the current 1 and 2 Mbit/s DSSS specification as described in IEEE Std 
802.11-1999, and an optional short preamble and header. At the receiver, the PLCP 
preamble and header are processed to aid in demodulation and delivery of the PSDU.   
The optional short preamble and header is intended for application where maximum 
throughput is desired and interoperability with legacy and non-short-preamble capable 
equipment is not consideration. That is, it is expected to be used only in networks of 
like equipment that can all handle the optional mode. (IEEE 802.11b standard) 
PSDU: PLCP service data unit 
Roaming: A LAN mobile user moves around an ESS and enjoys a continuous