8.29 Power class +CPWC

27.0073GPPAT command set for User Equipment (UE)Release 18TS

Table 89: +CPWC parameter command syntax


Possible response(s)


+CME ERROR: <err>


+CPWC: <curr_class1>,<def_class1>,<band1>[,<curr_class2>,<def_class2>,<band2>[…]]

+CME ERROR: <err>


+CPWC: list of supported (<band>,(list of <class>s)) pairs

+CME ERROR: <err>


This command is used to set the preferred MT power class for each GSM frequency band supported. The interaction of this setting with the selected bearer service (+CBST and HSCSD commands) is manufacturer specific (for example, selecting a multislot operation might reduce the power class automatically). If setting fails in an MT error, +CME ERROR: <err> is returned. Refer clause 9.2 for possible <err> values.

Read command returns the currently selected output power class and default output power class for each supported frequency band (as defined by MT manufacturer). Parameter <band1> and its associated power class parameters refer to the currently used frequency band.

Example: +CPWC: 2,1,1,5,4,0 indicates a dual-band MT currently using band GSM1800, for which the power class is currently set to 2, the default being class 1, and for which the currently set power class value for GSM900 is class 5 the default being class 4.

Test command returns supported bands and their power classes as compound values.

Example: +CPWC: (0,(0,4,5)),(1,(0-2)) indicates a dual-band handheld MT.

Defined values

<class>, <curr_classn>s, <def_classn>s: integer type

0 default (not applicable to <curr_class>s or <def_classn>s)

1… MT output power class as in 3GPP TS 45.005 [38]

<band>, <bandn>s:

0 GSM900

1 GSM1800

2 reserved for GSM1900

3 GSM 400