WorldPhone Liberator – Chapter 5. Appendices
E-1
AOR-E
see map in chapter 1. Introduction
AOR-W
Atlantic Ocean Region West,
see map in chapter 1. Introduction
ARQ
automatic repeat request, protocol for error detection and automatic
retransmission of defective blocks of data.
ASD
asynchronous data transmission
ASD function/service
the built-in capability of the WorldPhone for asyn-
chronous data transmission.
AT command
used to control modem functions from the PC keyboard
(ATtention).
AT modem
the built-in modem of the WorldPhone that performs the modu-
lation and demodulation required for data communication.
Azimuth
horizontal direction angle between north and, e.g. the direction to
the satellite.
Bit rate
the number of bits transmitted per second (bps).
Bps
Bits per second
CHV2
higher access level on the SIM card, corresponding to WorldPhone
"owner" level.
DC
Direct Current
DCE
data circuit terminal equipment
Deg
degrees
DTE
data terminal equipment
DTMF
Dual-Tone Multifrequency Dialing, pulsing in which each digit is
represented by a specific pair of audio frequencies (one tone below 1000 Hz
and another above 1200 Hz).
Elevation
vertical angle to the satellite, e.g. the height of the satellite above
the horizon.
FWD ID
forward Id, telephone network identity
IMN
Inmarsat Mobile Number, a unique 9-digit number which identifies each
port of the WorldPhone.
Inmarsat
International Maritime Satellite Organisation.
IOR
Indian Ocean Region,
see map in chapter 1. Introduction
ISN
Inmarsat Serial Number, individual number assigned to each
WorldPhone terminal.
ISP
Inmarsat Service Provider
Kbps
Kilobits per second
List of terms
Appendix E – List of terms
Appendix E
List of terms