User`s guide

100-8006-152G AirborneDirect™ Serial Bridge User’s Guide Page 75
Quatech, Inc. Confidential
UDP INTERACTION
The Module includes UDP support. There are two configuration options to activate UDP. UDP
transmit can be enabled either in a “UDP” only or “both” mode.
The UDP Target IP Address, UDP Target IP Port, UDP Transmit Mode, and
UDP Listen Port settings apply to UDP functions for the Bridge.
UDP Only Mode
The factory default UDP transmit and receive port number is 8023. You can change this default
value using the settings UDP Target Port and UDP Listen Port.
UDP frames will be passed to the UDP Target IP Address and UDP Target Port
address and/or broadcasted if UDP Transmit Mode is set to bcast or both, when the unit is
in PASS mode. In addition, UDP frames will be received on the UDP Listen Port when the
unit is in PASS mode.
Both Mode
A connection must be made using the TCP tunnel. UDP will transmit and receive
UDP frames (like in UDP only mode) when the TCP tunnel is established and
active. When the TCP connection closes, UDP operations halt. If the TCP tunnel
is active, thereby allocating the serial port, then received UDP datagrams will be
dropped.
HOST INTERACTION USING UDP
The UDP functions (between the Bridge and the Host) operate in pass-through mode. By factory
default, the Module starts up in master-Listen mode.
APPENDIX A
UDP AND POWER MANAGEMENT