
Helmholz Modem 56k 4.1
49
Command Description
AT+CMGS=<n>
SMS dispatch directly via AT command
Depending on the setting of
AT+CMFG=<n>
, the command
AT+CMGS=<n>
will have
a different syntax.
Setting
AT+CMGF=1
(text mode):
AT+CMGS=<phonenumber>
The modem returns the “>” character and awaits the SMS text (up to 160 charac-
ters), ending with an EOF character (0x1A or STRG-Z).
Notes:
¾
Depending on the provider, the phone number must be entered in the for-
mat "0941xxxx" or "49941xxxx" (see
AT*M
and/or
AT&Z2
).
¾
After the sending procedure was successful, the modem returns “
+CMGS:
000
”.
Setting
AT+CMGF=0
(PDU mode):
AT+CMGS=<PDU string length>
The modem returns the character “>” and awaits the PDU string, ended
with an EOF character (0x1A or STGR-Z).
Notes:
¾
Depending on the provider, the phone number must be entered in the for-
mat "0941xxxx" or "49941xxxx" (see
AT*M
and/or
AT&Z2
).
¾
"Numbering Plan" is ignored.
¾
The service center is defined by
AT&Z0
, the SCA field in the PDU string is
ignored.
¾
Message header, confirmation SMS and validity period are not supported.
¾
Data coding scheme: Only the “default alphabet” is supported.
¾
After the sending procedure was successful, the modem will return “
+CMGS:
<MR>
”, where
<MR>
is the message reference defined in the PDU string.
AT+CPIN?
Dummy command for GSM compatibility
AT+CPIN?
responds with
"+CPIN: READY"
.
Note: This command only serves for the purpose of compatibility with appli-
cations for GSM devices.
AT+CREG?
Dummy command for GSM compatibility
AT+CREG?
responds with
"+CREG: 0,1"
.
Note: This command only serves for the purpose of compatibility with appli-
cations for GSM devices.
AT+CSQ
Dummy command for GSM compatibility
AT+CSQ
responds with
"+CSQ: 20.99"
.
Note: This command only serves for the purpose of compatibility with appli-
cations for GSM devices.
AT+CPMS?
Dummy command for GSM compatibility
AT+CPMS?
responds with
"+CPMS: "MT",8,40,"MT",8,40,"MT",8,40
".
Note: This command only serves for the purpose of compatibility with appli-
cations for GSM devices.
Summary of Contents for 700-751-HSM11
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