SimCom SIM7500 Series At Command Manual page 127

manufacturer specific if this response is used when normal voice call is established.
When the AT+COLP=1 is set, any data input immediately after the launching of "ATDXXX;" will
stop the execution of the ATD command, which may cancel the establishing of the call.
SIM PIN References
YES 3GPP TS 27.007
Syntax
Test Command
AT+COLP=?
Read Command
AT+COLP?
Write Command
AT+COLP =<n>
Execution Command
AT+COLP
Defined values
<n>
Parameter sets/shows the result code presentation status in the TA:
0 – disable
1 – enable
<m>
0 – COLP not provisioned
1 – COLP provisioned
2 – unknown (e.g. no network, etc.)
Examples
AT+COLP?
+COLP: 1,0
OK
ATD10086;
VOICE CALL: BEGIN
SIM7500_SIM7600 Series_AT Command Manual_V1.07
Responses
+COLP: (list of supported <n>s)
OK
Responses
+COLP: <n>,<m>
OK
ERROR
+CME ERROR: <err>
Responses
OK
ERROR
+CME ERROR: <err>
Responses
Set default value(<n>=0, <m>=0):
OK
Smart Machine Smart Decision
126 2017-12-25