Chapter 3: AT Commands Reference
April 15, 2008 G24-L AT Commands Reference Manual 3-113
DCS handling
Sending or Storing SM
When sending or storing SM in TEXT mode, only the specified <dcs>s in Table 3-46, +CSMP
command definitions, will be supported. Handling will be as shown in Table 3-72.
Table 3-72 shows the conversion between the <dcs> and +CSCS setting when storing SM to
memory or sending SM.
Note: If SMS, requested to be read in TEXT mode, is a GSM ’7’ bit Default alphabetical
encoded and contains undefined extended characters in User Data (e.g. hex base 1B07),
then two septets will be converted, as two separate characters accordingly, to currently
selected (+CSCS setting) character set.
Reading SM
Any <dcs> value is accepted when receiving an SM.
When reading a SM with unsupported <dcs> the message header will be passed as usual. The
DATA will be output in "HEX" format.
Table 3-72: <dcs> field and +CSCS settings conversion when writing SM
CASE <dcs> field
User-Data-Hea
der
Current TE
character set
(+CSCS)
Action
A Default alphabet Not Set UTF8 or UCS2 Returns an error
since conversion
from these
character sets to
default alphabet
is impossible.
GSM G24-L converts
each two IRA
characters long
hexadecimal
number to 7-bit
septet.
ASCII or 8859 G24-L converts
each character to
7-bit septet.
B Default alphabet Set All G24-L converts
each two IRA
characters long
hexadecimal
number to one
8-bit octet.
C 8-bit or UCS2 All All G24-L converts
each two IRA
characters long
hexadecimal
number to one
8-bit octet.
