SimCom SIM7500 Series At Command Manual page 226

sswd> (for
CDMA1x-EvDo)
Execution Command
AT+CGAUTH
Defined values
<cid>
Parameter specifies a particular PDP context definition. This is also used in other PDP
context-related commands.
1...24,100...179
<auth_type>
Indicate the type of authentication to be used for the specified context. If CHAP is selected another
parameter <passwd> needs to be specified. If PAP is selected two additional parameters
and <user> need to specified.
0 – none
1 – PAP
2 – CHAP
3 – PAP or CHAP
<passwd>
Parameter specifies the password used for authentication.
<user>
Parameter specifies the user name used for authentication.
Examples
AT+CGAUTH=?
+CGAUTH: ,,127,127(for CDMA1x-EvDo only)
+CGAUTH: (1-24,100-179),(0-3),127,127
OK
AT+CGAUTH=1,1,"123","SIMCOM"
OK
SIM7500_SIM7600 Series_AT Command Manual_V1.07
+CME ERROR: <err>
Responses
OK
ERROR
+CME ERROR: <err>
Smart Machine Smart Decision
<passwd>
225 2017-12-25