TECHNICAL REFERENCE AND USER’S GUIDE
REV A
GSM GATEWAY
PROGRAMMING
GT20/GT10 GSM Gateway has a flexible structure, thanks to its software features
and abilities of GSM modules. These features can be adjusted according to customer
demands through programming.
Programming of both of the GSM modules that are on the gateway are carried out
through analog lines that have been reserved for them. That is, programs should be
entered separately for each GSM module.
By entering the programming features specified here through two different analog lines
for both modules of GT20, the same or different configurations can be formed for two
GSM modules. The programming of GT10 is made over the corresponding analog line
connection.
If GT20/GT10 has directly been connected to the telephone, then that telephone must
be DTMF. If GT20/GT10 has been connected to an external line of an exchange, then
programming can be done through an extension of that exchange by accessing the
corresponding line. In that case, the external line of the exchange must be in DTMF
signaling mode.
The continuous dial tone heard when the GT20/GT10 programming starts turns into a
discontinuous dial tone with special rhythm.
Moreover, a confirmation tone is received when a parameter is supposed to be entered
during program entry and when the program code is successfully entered.
On the other hand, error tone is received when a mistake is made during program
entry.
Detailed information about cadences and frequencies of these sounds can be found in
the chapter “Technical Specifications” in this guide.
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Putting the GSM Module into Programming Mode:
In order to initiate the programming, first of all, the GSM module is put into the
programming mode through this program.
Default:
Programming mode is not active.
Notes:
During the programming mode, if no program entry is done for one minute, then the
module is automatically taken out of the programming mode and the programs are
saved. Following each successful program entry, that one-minute duration starts again.
Taking the GSM Module Out Of Programming Mode:
The module must be taken out of the programming mode, in order to terminate
programming and storing new parameter values into the memory.
Automatic PIN Code Entry:
Thanks to this program, if there is a stored PIN code in the system memory, then when the
module is turned off and on again, the PIN code entry for the SIM card is done automatically.
Parameters
P
:
0
Automatic PIN code entry is not on line
:
1
Automatic PIN code entry is on line
Default
P = 1
Notes:
• While this feature is active, when the module is put on line, if there is a PIN code stored
in the non-volatile memory of the module, the processor transmits that PIN code to the
GSM module. If the PIN code entry is unsuccessful (incorrect PIN code), a second try is
not performed (in order not to lock the SIM card) and the PIN code is supposed to be
entered through telephone.
• If this feature is not active, even if there is a stored PIN code in the non-volatile memory,
that PIN code is not transmitted to the GSM module, one is supposed to enter the PIN
code through telephone.
• During the first installation of the module, since there cannot be any stored PIN code in
the non-volatile memory, a PIN code will have to be entered when the SIM card is
installed and the device is put to operation. If the entered PIN code is a valid one, then
it is saved into the non-volatile memory and since the automatic PIN code entry feature
is active at the beginning, during later on/off operations, the module wall operate without
entering the PIN code.
• During normal operation, if the SIM card in one of the channels is supposed to be replaced:
a.
The module is put into programming mode and the automatic PIN code entry
feature of the corresponding module should be deactivated.
b.
After the module has been turned off and the SIM card has been replaced when
the module is powered again, the PIN code will be prompted. PIN code of the
new SIM card should be entered. Upon entering the correct code, it is saved into
the non-volatile memory.
c.
After the module is connected to the GSM network and gets into normal
operation mode, it may be put into programming mode and the Automatic PIN
Code Entry feature of the corresponding channel may be activated.
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