Topcom Skyr@cer 544 Quick Installation Manual page 13

HL_Skyr@cerAP544.book Page 13 Wednesday, February 12, 2003 3:19 PM
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Authentication Type : The Authentication Type default is set to Open System, and you may want
to set to Shared Key when the clients and AP in the same wireless network enable the WEP
encryption. All the nodes and hosts on the network must use the same authentication type. It's
recommend that you use the default setting.
Preamble Type : Preamble is a sequence of bits transmitted at 1Mbps that allows the PHY
circuitry to reach steady-state demodulation and synchronization of bit clock and frame start. Two
different preambles and headers are defined: the mandatory supported Long Preamble and
header, which interoperates with the 1 Mbit/s and 2 Mbit/s DSSS specification (as described in
IEEE Std 802.11), and an optional Short Preamble and header (as described in IEEE Std
802.11b). At the receiver, the Preamble and header are processed to aid in demodulation and
delivery of the PSDU. The Short Preamble and header may be used to minimize overhead and,
thus, maximize the network data throughput. However, the Short Preamble is supported only from
the IEEE 802.11b (High-Rate) standard and not from the original IEEE 802.11. That means that
stations using Short-Preamble cannot communicate with stations implementing the original
version of the protocol.
Basic Rate : The basic transfer rate is set depending on the speed of your wireless network. For
example, you set 1-2 (Mbps) if you have older 802.11 compliant device in your network, which
supports 1 ~ 2 Mbps data rate. This setting does not limit the basic transfer rates of the faster
802.11 compliant network devices.
Antenna Selection : To set the antenna for transmitting data. The default setting is Diversity
Antenna, which is better for reception.
SSID Broadcast : While SSID Broadcast is enabled, all wireless clients will be able to
communicate with the Access Point. For security purpose, you may want to disable SSID
Broadcast to allow only those wireless clients with the AP's SSID to communicate with the Access
Point.
Skyr@cer Access Point 544 13