User
Manual
GSM-4S
22
the point – press [1]. In order to change between the text mode and the numeric mode,
press the keys [0] and [#].
Pressing the [#] key when the module is in the numeric mode results in ending the
programming and sending the message.
The GSM-4S module can store in its memory 62 alphanumeric characters to be sent as an
SMS message. At an attempt to enter a longer message, the excessive portion of the text will
be omitted. There is no possibility to check the content of entered message. If you hang-up
the handset when entering the text, the function will be interrupted without sending any SMS.
11.3 T
HE RULES FOR CONVERTING THE NUMBERS
In case when the GSM-4S module operates in telephone line simulation mode, the number
received from the alarm control panel or normal telephone set (before sending it to
SIM300CZ telephone) is subjected to the required corrections. Thus, it is not necessary to
take the connection route into consideration, while programming the telephone number for
messaging or during dialing the number at normal telephone set. The built-in algorithm of the
number conversion permits the module to be installed directly on subscriber’s line (public
exchange telephone line) or on extension lines as well. If such line is cut off or lost, the
module will simulate the operation of PBX exchange and after receiving the number of
"outgoing line" the module will simulate the access to public exchange telephone line.
The telephone number is processed by the module as follows:
•
When dialing the number, the module checks that its first digits correspond to the pager
station number, or any of the "outgoing numbers".
•
4 seconds since dialing the last digit, the module will recognize the dialing as completed
and will proceed to convert the number. If an "outgoing number" has been selected, only
the digits directly following the number will be subjected to conversion.
The algorithm of converting the number is as follows:
1. if the dialed number begins with one of permanent prefixes (prefix – digits added before
the exact telephone number), the module skips to step 4,
2. if the dialed number begins with a "prefix to be erased" this prefix is erased and the
module skips to step 4,
3. if the dialed telephone number have no prefixes known to the module, Prefix to be added
is entered to the beginning of the dialed number, and the module skips to step 4,
4. if the dialed telephone number, after correcting in steps 1–3, is included in the list of
allowable numbers (Allowed numbers), or if the first digits of the dialed number
correspond to one of the pre-programmed numbers, or if the option "Any numbers" is set
- the number is recognized as the correct one, and the module starts to make connection
with the dialed telephone number via the SIM300CZ cellular telephone. Otherwise, the
connection is disabled and a busy tone is generated.
12. M
ONITORING
The GSM-4S module enables operation with two independent monitoring stations (using
GPRS transmission, SMS messages or audio channel). For this purpose it is necessary to
program the transmission parameters. It can be done from a PC with DLOAD10 program
(from version 1.00.031, tab: GPRS/Monitoring – page 29) or by using the module board
buttons (Service mode menu
Æ
GSM options
Æ
GPRS settings).
Reporting to the monitoring station can include:
•
GSM-4S module status,
•
events from the control panel.
