IDP 100 Modem Series - Developer Guide
T203, Version 04 92
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SkyWave Proprietary
Acronyms/Glossary
AT
AT is prefix for commands that comply with AT command
set. It means attention.
AT command mode
A mode that is part of the AT command set. In command
mode, the modem interprets and executes the incoming
serial data as AT commands. The incoming data is not
passed through the modem to the remote host.
beam number
Identifies the beam number transmitting the to-mobile
message.
C/N
Carrier-to-Noise Ratio
CRC
Cyclic Redundancy Check
Transfer mode
While in transfer mode, the modem transfers data via the
XMODEM–CRC protocol using block sizes of 128 bytes.
DCE
data communications equipment – A device such as a
modem that sits between the data terminal equipment
(DTE) and a data transmission circuit. Also known as data
circuit-terminating equipment.
DTE
data terminal equipment – The source of destination of
data, such as a terminal or computer, which communicates
with data communications equipment (DCE).
IDP 100 series
The family of IsatData Pro mobile DCE (modem) devices.
ITU-T
International Telecommunication Union –
Telecommunication Standardization Sector
Network ID
The first eight characters of a mobile ID or broadcast ID.
Sometimes referred to as the Link ID.
MIN
message identification number – Each SIN has a suite of
possible messages, identified by the MIN.
NVM
non-volatile memory
packet
A data element passed on the satellite channel that consists
of a packet header, a data portion and a Cyclic Redundancy
Check.
PRN
pseudo random number
SF
subframe
SIN
service identification number – part of the IsatData Pro
protocol that identifies the originator of from-mobile
messages or destination of to-mobile messages. Messages
originated from the DCE have a SIN equal to 0. The SIN is
one byte long, giving a possible 256 numbers (0 to 255).
SNR
signal-to-noise ratio
µC
microcontroller
UW
unique word
Traffic Channel ID
Uniquely identifies this traffic channel from all others
globally. The mobile device uses this field to verify that it
has acquired the correct channel.
Summary of Contents for IDP 100 Series
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