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Chapter 24: 802.IQ Settings
802.IQ v1 Features
24.1.2 802.IQ v1 Features
The 802.IQ v1 Features menus are entered from the 802.IQ tab of the Connectivity options
(see Figure 24.1 on page 305).
Enabled
This parameter enables or disables the 802.IQ v1 feature. The default value is disabled.
Initial RTT
The parameter Initial RTT (Round-Trip Time) is used to help determine the elapsed time, in
milliseconds, between an access point transmission and a terminal acknowledgement. The
access point continuously adjusts the acceptable round trip time, calculating the average
elapsed time over a number of transmissions for each mobile computer. If an acknowledge-
ment takes longer to receive than the average round trip time calculated, the access point
will resend the transmission.
Because access point(s) cannot calculate an average round trip time without a number of
transmissions, a starting point or "Initial Round Trip Time" is required. The access point
uses the time assigned to the "Initial RTT" parameter as a starting value for round trip calcu-
lations. Once the access point begins transmitting and receiving data to and from the mobile
computer, this value will be adjusted to reflect the actual average round trip time between
transmissions and acknowledgements.
The acceptable value ranges from 10 to 10000. The default value is 1000.
Protocol Type ID
This parameter identifies the 802.IQ protocol type, in order to avoid conflicts with other
generated Ethernet-type packets that use the same protocol type.
The acceptable value ranges from 1536 to 65535. The default value is 2457.
Important: The Protocol Type ID default value is rarely changed. If the protocol type is
Forward 802.IQ Packets Only
When bridging packets between the wireless and wired systems, this parameter enables the
9160 G2 to automatically filter out and discard all non-802.IQ v1 packets. The default
setting is disabled.
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Psion Teklogix 9160 G2 Wireless Gateway User Manual
changed, all mobile computer devices must be changed to match.
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