User guide

Appendices 75
• The remote device can also cause the modem to disconnect. If the remote modem disconnects
your modem will automatically sense the loss of the carrier signal and return to the OFF line
state.
• The ATH or ATZ commands can also be used to disconnect a call. In order to issue a command
to the modem when it is On Line, the modem must be placed into the On Line Command State.
This is accomplished by issuing a special escape sequence. The default value of this three digit
escape sequence is the “+” character (see S2 to change). The “+++” is protected by a one-
second delay before and after it is sent (see S12 to change the time) When the modem detects
the escape sequence, the OK result Result code will be displayed and the modem is in the On
Line Command State. The ATH or ATZ command can now be issued to disconnect the call.
Selecting country codes
Setting the modem’s country code is done by with the +GCI command. To change to one of the 30
available countries, issue the
AT+GCI=n command where “n” is one of the two digit country codes.
This command must be issued each the modem is turned on. It will not automatically store or save
this setting. It should be part of the Initialization string.
Example: AT+GCI=00<CR> Meaning: Change country code to Japan.
OK Meaning: The modem has accepted the command and is
now configured to operate in Japan
AT+GCI?<CR> Meaning: Display current country code
+GCI:00 Meaning: (Japan is the current country selected).
OK
To view which countries are available in the modems firmware, enter AT+GCI=?<CR>.
The modem will display all of the possible two digit country codes available.
Table D.7: Country Codes List
Country Code Country Code Country Code
Australia 09 Hong Kong 50 Poland 8A
Austria 0A India 53 Portugal 8B
Belgium 0F Ireland 57 South Africa 9F
Brazil 16 Italy 59 Singapore 9C
China 26 Japan 00 Spain A0
Denmark 31 Korea 61 Sweden A5
Finland 3C Mexico 73 Switzerland A6
France 3D Netherlands 7B Ta iwa n Fe
Germany 42 Norway 82 TBR21 FD