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Modem Reference 6-21
Note
Some countries do not permit calling tone to be disabled.
+GCAPRequest Complete Capabilities List
Syntax: AT+GCAP
AT+GCAP=?
This command displays one or more lines of information text, in a
standard format, describing the basic capabilities of the modem. This
allows a software package to determine which groups of extended-syntax
commands the modem supports. The response may contain one or more
of the following responses:
+CGSM GSM (+C) commands.
+DS Data Compression (+D) commands.
+ES Eror Control (+E) commands.
+FCLASS Fax (+F) commands.
+MS Modulation Control (+M) commands.
+W Wireless (+W) commands
+GCAP=? may be used to determine whether the modem supports the
+GCAP command: an OK response indicates support, ERROR indicates
non-implementation.
+GCI Country of Installation
Syntax: AT+GCI=<T.35 code>
AT+GCI?
AT+GCI=?
This command configures the modem for the country of use, selecting
operational parameters and ensuring conformity to the requirements of
the selected countrys telephone network. The +GCI parameter may only
be changed when the modem is in an idle state.
<T.35 code> refers to the 8-bit hexadecimal number next to the country
in the list below.
To determine which countries are currently supported, use AT+CGI=?
The command will respond with the T.35 codes for the countries sup-