Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3-463
The two requirements above have an exception regarding the UART configuration – the
settings for UART port speed and flow control (AT&K and AT+CBAUD/AT+IPR). These
settings are set in PREMUX state only, and will be kept unchanged until the G24 returns to
PREMUX state. If an IDLC tries to change the settings it receives an OK response, but the
real value is NOT changed. When the G24 is in MUX state, these two settings have either the
values that were defined in PREMUX, or the value set by the AT+CMUX command. If a
value was set with the AT+CMUX command, it is retained even after returning to PREMUX
state.