User's Manual

Eagle II GSM Radio Module Technical Manual Preliminary Draft: 08/31/00 54
Part Number: 07100017 version 00.04
© 2000 Xircom, Inc. All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc.
PSTN
Public Switched Telephone Network
RF
Radio Frequency
A frequency at which electromagnetic radiation may be detected and
amplified as an electric current at the wave frequency.
Rx
Recieve
Short Message
An alphanumeric message of up to 160 characters that can be sent to or from
a GSM terminal.
SIM
Subscriber Identification Module
“Smart Card” technology that contains user information and has four main
functions:
"
Authentication
"
Storage of data
"
Assist in encryption process
"
Subscriber protection
SMS
Short Message Services
Services provided by GSM network allowing the transmission and receipt of
short messages.
SMSC
Short Message Service Center
Location of SMS store and forward message server.
TBD
To Be Determined
Transparent Mode
Delivers a service with a variable error rate, with a guaranteed throughput
and delay.
Tx
Transmit
Type Approval
Rigorous testing required by GSM operators to ensure terminals operating on
network does not degrade performance, capacity, or functionality of GSM
network.
UL
Underwriters Laboratory
Testing agency chartered with ensuring safety of electrical devices.
USSD
Unstructured Supplementary Service Data
V.24 Serial Interface
The ITU-T standard defining interchange circuits between DTE and DCE.
V.24 is the ITU-T equivalent of EIA standard RS-232, with the exception of
voltage levels.