User manual
8.2. Trouble Shooting
If, after the GSM Gateway’s power-on, all LED's are on (except for the 1
st
and 4
th
from the
upper end), any the following situations has occurred:
• If the GSM Gateway does not beep, you have probably pressed the RESET button during
the power-on and the GSM Gateway is waiting for software reprogramming.
• If the GSM Gateway gives a permanent tone, some inapplicable software has been loaded
(for a different GSM Gateway model).
• If the GSM Gateway beeps intermittently, there is an EEPROM error.
If you forget the service password, remove the EEPROM, erase it in a programmer and it
push back into the socket. The default values, including the service password, will be reset.
Retrieval of stored settings is possible but it is necessary to contact manufacturer.
8.3. List of abbreviations
• CLIP - Calling Line Identification Presentation
• COM - serial port of computer
• DCD - Data Carrier Detect - signal which indicate established data connection
• DISA - PBX's function allowing calling party to enter (by DTMF only) a required
extension number
• DTMF - Dual Tone Multifrequency - (worldwide standard of dialling)
• EEPROM - Electrically Erasable Programmable Read Only Memory - Memory
independent of power supply (non-volatile memory)
• FXO - line interface dedicated to ordinary phone devices (worldwide standard)
• FXS - line interface electrically equivalent with ordinary phone (complementary to FXO)
• GND - Ground - contact or line connected with ground, or common reference point of
whole electronic circuit, which may be connected with ground
• GSM - Group Switched Mobile system - today's digital mobile cellular phone network
standard, used in Europe another parts of word, excluding USA and Japan
• HW - Hardware - in this context we mean any electronic equipment, circuit, board,
component etc.
• IN - Input - input terminal or contact
• I2CR - Intelligent Incoming Call Routing
• LCR - Least Cost Routing - software function which finds a cheapest path to make
required connection
• OUT - Output - output terminal or contact
• PBX or PABX - Personal (Automatic) Branch Exchange
• PC - Personal Computer - computer compatible with IBM PC standard
• PIN - Personal Identification Number - a short password, used to protect SIM against
unauthorized usage; after a few wrong attempts SIM card block itself automatically
• PUK - Personal Unblocking Key - long password, used to unblock SIM if blocked (see
PIN) and enter a new PIN value
• RS-232C - worldwide standard for serial port
• SIM - Subscriber Identity Module - module with chip, which is a carrier of information
about subscribers phone number in GSM network
• SMS - Short Message Service - more often it is used for this message itself
• SSR - Solid State Relay - semiconductor switch, used like a relay
•
SW - Software (any program)
• TTL - Transistor-Transistor Logic - standard for digital circuits, definition of voltages
for levels 0 a 1
• PSTN - Public Switched Telephone Network
61