Standard Horizon GM29 manual AT+CMGF=1 AT+CSDH=1

13. SHORT MESSAGE SERVICES - POINT TO POINT

carriage returns can be used (previously mentioned four character sequence shall be sent to the TE after every carriage return entered by the user);

if TE character set is “HEX”: the entered text should consist of two IRA character long hexadecimal numbers which ME/TA converts to 7-bit characters of GSM alphabet (e.g. 17 (IRA 49 and 55) will be converted to character Π (GSM 23));

if <dcs> indicates that 8-bit or UCS2 data coding scheme is used or <fo> indicates that GSM 03.40 TP-User-Data-Header- Indication is set: the entered text should consist of two IRA character long hexadecimal numbers which ME/TA converts into 8-bit octet (e.g. two characters 2A (IRA 50 and 65) will be converted to an octet with integer value 42).

•Sending can be cancelled by giving <ESC> character (IRA 27).

•<ctrl-Z> (IRA 26) must be used to indicate the ending of the message body.

<da>	Description
String type	GSM 03.40 TP-Destination-Address Value in string format;
	BCD numbers (or GSM default alphabet characters) are
	converted to characters of the currently selected TE
	character (refer command +CSCS). Type of address given
	by <toda>
<toda>	Description
String type	GSM 04.11 TP-Destination- Address Type-of-Address octet
	in integer format (when first character of <da> is +(IRA 43)
	default is 145, otherwise default is 129
<mr>	Description
String type	GSM 03.40 TP-Service-Centre-Time-Stamp in time-string
	format (refer <dt>)
<mr>	Description
Integer	GSM 03.40 TP-Message-Reference

Example

AT+CMGF=1

OK

AT+CSDH=1

OK

AT+CSMP=17,167,0,0

OK

189

LZT 123 7361 R1A