LE910Cx AT Commands Reference Guide
80502ST10950A Rev. 14 Page 645 of 1904 2022-03-04
The DCD signal shall be in ON state while data is entered. The
echoing of data is controlled by echo command E.
In PDU mode: when the length of the SMSC address equals 0,
then the SMSC address set with command +CSCA is used; in this
case the SMSC Type of Address octet shall not be present in the
data.
To ensure that during the command execution, which may take
several seconds, no other SIM interacting commands issued,
care must take.
It is possible to send a concatenation of at most 16 SMs; the
maximum number of chars depends on the <dcs>:
- 2432 chars
- 2128 chars if 8-bit is used
- 1056 chars if UCS2 is used
If message sending fails for some reason, then an error code is
reported.
AT+CMGS=?
Test command returns the OK result code.
To avoid malfunctions it is suggested to wait for the +CMGS: <mr> or +CMS
ERROR: <err> response before issuing further commands.
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