Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 106 12/24/2010
OK
2) If PDU mode(+CMGF=0) and sending successful:
+CMGS: <mr>
OK
3)If error is related to ME functionality:
+CMS ERROR: <err>
Parameter
<mr> GSM 03.40 TP-Message-Reference in integer format
Reference
GSM 07.05
Note
If TE Character Set is GSM, it supports 160-byte maximum; If TE
Character Set is UCS2, it supports 70-word maximum.
4.2.6 AT+CMGW Write SMS Message to Memory
AT+CMGW Write SMS Message to Memory
Test Command
AT+CMGW=?
Response
OK
Response
TA transmits SMS message (either SMS-DELIVER or SMS-SUBMIT)
from TE to memory storage <mem2>. Memory location <index> of the
stored message is returned. By default message status will be set to 'stored
unsent', but parameter <stat> allows also other status values to be given.
If writing is successful:
+CMGW: <index>
OK
If error is related to ME functionality:
+CMS ERROR: <err>
Write Command
1) If text mode
(+CMGF=1):
AT+CMGW=<o
a/da>[,<tooa/tod
a>]
<CR> text is
entered
<ctrl-Z/ESC>
<ESC> quits
without sending
2) If PDU mode
(+CMGF=0):
AT+CMGW=<le
ngth><CR>
PDU is given
<ctrl-Z/ESC>
Parameters
<oa> GSM 03.40 TP-Originating-Address Address-Value field in
string format(string should be included in quotation marks);
BCD numbers (or GSM default alphabet characters) are
converted to characters of the currently selected TE character
set (specified by +CSCS in TS 07.07);type of address given
by <tooa>
<da> GSM 03.40 TP-Destination-Address Address-Value field in
string format(string should be included in quotation marks);