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Owner’s Manual Rev 1.0 Page 196 of 196
The DCD signal is in the ON state as PDU is given.
The echoing of given characters back from the TA is controlled by
V.25ter echo command E.
The PDU shall be hexadecimal format (similarly as specified for
<pdu>) and given in one line; ME/TA converts this coding into the
actual octets of PDU.
When the length octet of the SMSC address (given in the <pdu>)
equals zero, the SMSC address set with command Service Centre
Address +CSCA is used.
Sending can be cancelled by giving <ESC> character (IRA 27).
<ctrl-Z> (IRA 26) must be used to indicate the ending of PDU
<mr> Description
Integer type GSM 03.40 TP-Message-Reference in integer format
•_
<length> Description
Integer type Value indicating in PDU mode (+CMGF=0), the length of
the actual TP data unit in octets (i.e. the RP layer SMSC
address octets are not counted in the length)
•_
<ackpdu> Description
... GSM 03.40 RP-User-Data element of RP-ACK PDU;
format is same as for <pdu> in case of SMS, but without
GSM 04.11 SC address field and parameter shall be
bounded by double quote characters like a normal string
type parameter
•_ .
Text Mode
Description Command Possible Responses
Send message AT+CMGS=<da>
[,<toda>] <CR>
Text is entered<ctrl-
Z/ESC>
•_ +CMGS:
<mr>[,<scts>]
•_ +CMS ERROR: <err>
•_ OK
•_ ERROR
Show if the command is
supported
AT+CMGS=?
•_ OK
•_ ERROR