6.10
+WQ Cause Codes
Cause codes are used to indicate the states of communications. They are sent by
the LES. If the NO CARRIER, BUSY, or NO ANSWER result code is generated,
its details can be displayed with the +WQ command.
6.11
+WQ Extended Error Codes
Extended error codes are used to show the details of any error that has occurred
(with the ERROR or NO DIALTONE result code generated). The details of the
error can be displayed using the +WQ command. The values and meanings of
extended error codes are listed below:
6. 9.6k DATA COMMUNICATIONS
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