MC55 AT Command Set
12. Short Message Service (SMS) Commands s
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MC55_ATC_V01.05 Page 312 of 469 2/10/04
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12. Short Message Service (SMS) Commands
The AT Commands described in this chapter allow an external applic ation to use the Short Message Service with
the MC55.

12.1 SMS parameters

Parameter Description
Format is same for <pdu> in case of SMS, but without GSM 24.11 SC address field and parameter shall be
bounded by double quote characters like a normal string type rarameter
String type alphanumeric representation of <da> or <oa> corresponding to the entry found in phonebook; imple-
mentation of this feature is manufacturer specific
Command Data
GSM 03.40 TP-Command-Data in text mode responses; ME/ TA converts each 8-bit octet into two IRA character
long hexadecimal numbers (e.g. octet with integer value 42 is pres ented to TE as two characters 2A (IRA 50
and 65))
Command Type
GSM 03.40 TP-Command-Type in integer format
[0]...255
Destination Address
GSM 03.40 TP- Destination-Address Address-Value field in s tring format; BCD numbers (or GSM default alpha-
bet characters) are converted into characters; type of address given by <toda>
User Data
In case of SMS: GSM 03.40 TP-User-Data in text mode responses; format:
• If <dcs> indicates that GSM 03.38 default alphabet is used and <fo> indicates that GSM 03.40 TP-User-
Data-Header-Indication is not set: ME/TA converts GSM alphabet into current TE char acter set according to
rules covered in Annex A.
• If <dcs> indicates that 8-bit or UCS2 data coding scheme is used, or <fo> indicates that G SM 03.40 TP-
User-Data-Header-Indication is set: ME/TA converts each 8-bit octet int o hexadecimal numbers con-taining
two IRA characters (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50 and 65).
In case of CBS: GSM 03.41 CBM Content of Message in text mode responses; format:
• If <dcs> indicates that GSM 03.38 default alphabet is used: ME/TA converts GSM alpha bet into current TE
character set according to rules covered in Annex A.
<ackpdu>(num)
<alpha>(str)(+CSCS)
<cdata>(num)
<ct>(num)
<da>(num)(+CSCS)
<data>(num)(+CSCS)