User's Manual

UL-801 Installation Manual
Page A1-4
23-20-06 15 December 2011
Acronym/Abbreviation/Term Description
Packet Mode Data A half duplex bi-directional communication link in which
data is accumulated in packets of various lengths and sent
out in a burst or bursts so therefore does not support voice
communications. Packet switching is the process of routing
and transferring data by means of addressed packets so that
a channel is occupied during the transmission of the packet
only. Upon completion of the data transfer, the channel is
made available for the transfer of other traffic. Supported
by a UniLink ARINC port configured to provide VHF and
SAT capability.
PDC Pre-departure Clearance
PFD Primary Flight Display
PIREP Pilot Weather Report
POA Plain Old ACARS
POS Position
PTT Push-to-Talk
RCDU Remote Control Display Unit
RCVD Received
RF Radio Frequency
RPTS Reports
RTS Request to Send
RQD Required
RTE Route
RX Receive
SAT Abbreviation for Satellite Communications Link. The SAT
link provides communication via Iridium Short Burst Data
(SBD) and packet mode data Inmarsat equipment that
utilizes a specific satellite constellation.
SatCom Satellite Communications
SCN Software Control Number
SDU Satellite Data Unit
SELCAL Selective Calling
SIGMET Significant Meteorological Information
SITA Society of International Aeronautical Telecommunications
(Societe Internationale de Telecommunications
Aeronautiques)
SQP Signal Quality Parameter
SSDTU Solid State Data Transfer Unit (UASC)