Functions and their Configuration
INSYS GSM 4.2
INSYS GSM 4.2 compact
58
Sep-06
6.2.5
SMS acknowledgement
An SMS in the format of a command SMS, which contains only the text
ACKN
instead of
an AT** command after the password, is entered with a time stamp and a phone number
in the history list, if automatic SMS processing is enabled.
An alarm message that is received as SMS may be acknowledged by sending it back to
the INSYS GSM.
6.2.6
Requirements for sending an SMS
¾
Valid number of the SMS service center SCN (see Chap.
Table: GSM - Service Cen-
ter Numbers
¾
)
¾
Valid recipient number
¾
For alarm messages: The text is defined.
¾
The INSYS GSM is logged in at the GSM network.
Note
In the following cases the handshake of the serial interface (see
Chap. 6.1.9) and the DTR behavior (see Chap.6.1.10) must be deacti-
vated:
¾
The INSYS GSM is operated as a stand-alone device, i.e. it is
not connected via the serial interface.
¾
The INSYS GSM is operated at a device which does not sup-
port hardware handshake.
6.2.7
Send and receive SMS
The INSYS GSM can create as well as receive SMS messages via AT commands. The re-
spective commands and parameters are listed in the separate document "AT Command
Set For INSYS GSM 4.2" at http://www.insys-tec.de.
Note
For activated, automatic SMS processing, the INSYS GSM reads the
SMS messages once every minute. After that it edits the SMS mes-
sages and deletes them.
Pertinent AT commands
AT**SMSRX
Automatic SMS reception processing
AT+CMGD
Delete SMS message
AT+CMGF
SMS message format
AT+CMGL
List SMS message
AT+CMGR
Read SMS message
