Nortel BayStack 660, Use Manual

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Using the BayStack 660 Wireless LAN Access Point
1-8
203939-B
CTS reserves the area around the receiver. In the infrastructure mode (go
to “Network Overview” on page 1-8” for more information), the sender and
receiver are the BayStack 660 Access Point and the BayStack 660 PC Card.
These RTS and CTS packets offer protection against collisions during
transmissions.
• An acknowledgment (ACK)
ACK confirms that the data packet was received correctly. If no ACK packets
are received, the sender retransmits the data packet. This positive ACK with
retry protocol reduces the bit error rate on the cordless physical layer to a level
comparable to that of wired LAN PC Cards.
The BayStack implementation of the physical layer and MAC portion of the data
link layer makes it possible for multiple BayStack 660 Wireless LAN networks to
share the same environment. Each BayStack 660 Wireless LAN network has a
network identifier called a service set identifier (SSID). BayStack 660 Access
Points with the same SSID form an ESA. The MAC protocol enables several
laptops with BayStack 660 PC Cards to coexist without conflicts. The laptop
computer always listens to the media before transmitting; if it senses another
transmission, it waits. Simultaneous transmissions (collisions) do happen;
however, the data packets are resent automatically using an algorithm designed
to minimize retransmissions. Go to “Service Set Identification (SSID)” on
page 1-10” for more information on SSIDs.
Software Overview
Drivers for Microsoft
Š
Windows 95
Š
, Windows 98
Š
, and Windows NT
Š
are
included on the BayStack 660 Wireless LAN Software CD. Utilities for configuring
the BayStack 660 PC Card and for diagnosing and managing your BayStack 660
Wireless LAN are included on the BayStack 660 Wireless LAN Software CD.
Network Overview
The BayStack 660 Access Point and BayStack 660 PC Card provide freedom
from network cabling for users in an ad hoc or in an infrastructure network.
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