SimCom SIM7500 Series At Command Manual page 51

Execution Command
AT+GCAP
Defined values
<name>
List of additional capabilities.
+CGSM GSM function is supported
+FCLASS FAX function is supported
+DS Data compression is supported
+ES Synchronous data mode is supported.
+CIS707-A CDMA data service command set
+CIS-856 EVDO data service command set
+MS Mobile Specific command set
Examples
AT+GCAP
+GCAP:+CGSM,+FCLASS,+DS
OK
SIM7500_SIM7600 Series_AT Command Manual_V1.07
Responses
+GCAP: (list of <name>s)
OK
ERROR
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50 2017-12-25