# AT+QCAINFO Verify CA performance and check multiple CCs for Carrier Aggregation on the modem along with frequency band and bandwidth per component carrier. ### Test Command ``` AT+QCAINFO=? ``` {% code title="Response" overflow="wrap" %} ```html '' ``` {% endcode %} ### Execution Command Execute the below Command to query the carrier aggregation (CA) information ``` AT+QCAINFO ``` {% code title="Response" overflow="wrap" %} ```html +QCAINFO: "PCC",,,, ,,,,, +QCAINFO: "SCC",,,, ,,,,, +QCAINFO: "SCC",,,, ,,,,, ``` {% endcode %} {% code title="If no active secondary cell" overflow="wrap" %} ```html '' ``` {% endcode %} > Example: > > **mmcli -m 2 --command="AT+QCAINFO"** > > > > response: ' ' ### Parameters "-" or - indicates the parameter is invalid under the current condition.

Parameter	String	Description
<PCC>		Primary carrier component
<SCC>		Secondary carrier component.
<freq>		EARFCN
<bandwidth>	Integer type	Bandwidth. 6 -- 1.4 MHz 15 -- 3 MHz 25 -- 5 MHz 50 -- 10 MHz 75 -- 15 MHz 100 -- 20 MHz
<band>	String type	DL bandwidth. "LTE BAND 1 / 2 / 3 / ... / 66"
<pcell_state>	Integer type	Primary cell state 0 -- No serving 1 -- Registered
<scell_state>	Integer type	Secondary cell state 0 -- Deconfigured 1 -- Configuration deactivated 2 -- Configuration activated
<PCID>	Integer type	Physical Cell ID
<RSRP>	Integer type	Reference Signal Received Power
<RSRQ>	Integer type	Reference Signal Received Quality
<RSSI>	Integer type	Received Signal Strength Indication
<SINR>	Integer type	Logarithmic value of SINR. Values are in 1/5th of a dB. Range: 0–250 (-20 to +30 dB).