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Voice over 802.11 (Artech House Telecommunications Library)

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An understanding of the public switched telephone network (PSTN) and how it is
potentially going to be replaced is best grasped by understanding its three major
components: access, switching, and transport. Access pertains to how a user
accesses the network. Switching refers to how a call is “switched” or routed
through the network, and transport describes how a call travels or is “transported”
over the network.

What, technically speaking, is 802.11b and how does it relate to IEEE 802.11?
This chapter covers the technology of transmitting data over the airwaves, the
process of that transmission, and the topologies and components of wireless networks.
Thousands of enterprises worldwide are “cutting the wires” to their
LANs to enjoy greater productivity from their unwired workforce. The 802.11b
technology also presents the potential to save money on infrastructure (wiring
buildings for networks) and telecommunications services.
Because Vo802.11 is VoIP transmitted on 802.11, it is necessary to understand
how this transmission medium functions. Just as voice has been transmitted
over asynchronous transfer mode (ATM), frame relay, X.25, and the Internet
Protocol, it can also be transmitted on 802.11. This chapter discusses how
802.11 works. From this, the reader will gain a better understanding of how
802.11 can be used to transmit voice.
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