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Iridium Communications, Inc.
Iridium 9523 Product Developers' Guide
Revision 2.6
2 - MO message unsent
3 - MO message sent
(When reading an MT message the first time, the status is reported as 0 (unread). The status is
then changed to 1 (read), and that is reported on subsequent reads of that message.)
<alpha>:string type alphanumeric representation of TP-destination address or TP-originating
address corresponding to the entry found in the phonebook (optional field);
<length>:in PDU mode, this is the length of the actual TP data unit in octets (i.e. the RP layer
SMSC address octets are not counted in the length)
<pdu>: GSM 04.11 [8] SC address followed by GSM 03.40 [9] TPDU in hexadecimal format.
5.7.39 +CMGS - Send SMS Message
Exec Command: +CMGS=<length><CR><pdu><ctrl-Z/ESC> (PDU mode)
Execution command sends message from the FA to the network (SMS-SUBMIT). In PDU mode,
<length> is the length of the actual TP data unit in octets; <pdu> is the GSM 04.11 [8] SC address
followed by GSM 03.40 [9] TPDU in hexadecimal format.
PDU entry must be terminated by <ctrl-Z>. Sending can be cancelled by the <ESC> character.
Response is in the following format for PDU mode:
+CMGS: <mr>
where <mr> is the message reference value of the message.
If sending fails, final result code +CMS ERROR: <cms_err> is returned.
5.7.40 +CMGW - Write SMS Message To Memory
Exec Command: +CMGW=<length>[,<stat>]<CR><pdu><ctrl-Z/ESC> (PDU mode)
Execution command stores a message to memory storage <mem2> (<mem2> is selected by the +CPMS
command). In PDU mode, <length> is the length of the actual TP data unit in octets; <pdu> is the GSM
04.11 [8] SC address followed by GSM 03.40 [9] TPDU in hexadecimal format. By default, message
status will be set to 'stored unsent', but parameter <stat> allows also other status values to be given.
PDU entry must be terminated by <ctrl-Z>. Storing can be cancelled by sending the <ESC> character.
Response is in the following format for PDU mode:
+CMGW: <index>
where <index> indicates the memory location where the message is stored.
If storing fails, final result code +CMS ERROR: <cms_err> is returned.
5.7.41 +CMOD - Call Mode
Set Command: +CMOD=[<mode>]
Set command selects the call mode of further dialing commands (D) or for next answering command (A).
Mode can be either single or alternating (the terms "alternating mode" and "alternating call" refer to all
GSM bearer and teleservices that incorporate more than one basic service (voice, data, fax) within one
call). For the satellite phones, only a single call is supported.
<mode>:
0
single mode (default)
Iridium Communications, Inc.
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