<fun> Integer type
0 Minimum functionality
1 Full functionality. Enable MT to transmit and receive RF circuits for all
supported radio access technologies. For MTs supporting +CSRA, this
equals the RATs indicated by the response of +CSRA=?. Currently +CSRA
setting is ignored. It is not required that the transmitting and receiving RF
circuits are in a disabled state when this setting takes effect.
2 Disable MT to transmit RF circuits only
3 Disable MT to receive RF circuits only
4 Disable MT to transmit and receive RF circuits
5...127 Reserved for manufacturers as intermediate states between full and minimum
functionality
128 Full functionality with radio access support according to the setting of +CSRA.
Enables MT to transmit and receive RF circuits if it not already enabled. This
<fun> setting is applicable for MTs supporting +CSRA.
129 Prepare for shutdown. This setting has its prime use when some of the MT‟s
resources (e.g. file system) are located on a tightly integrated TE (host). The
MT will execute pending actions resulting in "permanent" changes, e.g.
execute pending file system operations. The MT will also make an orderly
network detachment.
After this action and +CFUN has returned OK, the MT can be shut down with
<fun>=0, or by other means.
After setting <fun>=129, only <fun>=0 is valid. All other values will make
+CFUN return ERROR.
<rst> Integer type
0 Do not reset the MT before setting it to <fun> power level. This shall be
always default when <rst> is not given.
1 Reset the MT before setting it to <fun> power level
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