Siemens AC75 - Manual (Page 373)

AC75 AT Command Set
13.7 AT+CMGS
s
AC75_ATC_V01.002 Page 373 of 569 10/30/06
Confidential / Released
• Message Length in Text Mode
The maximum length of a short message depends on the used coding scheme: It is 160 characters if the 7
bit GSM coding scheme is used, and 140 characters according to the 8 bit GSM coding scheme.
In case UCS2 character set selected it is highly recommended to set Data Coding Scheme (
<dcs>
of
AT+CSMP
) to 16-bit data, otherwise the length of sms user data is restricted to 88 octets. Even better for mes-
sages with UCS2 character set is the PDU Mode.
• At baudrates lower than 19200 it is recommended to use the line termination character only (refer to
<n>
of
ATS3
, default
<CR>
) before entering text or PDU. Use of the line termination character followed by the
response formatting character (see
<n>
of
ATS4
, default
<LF>
) can cause problems.