User Manual

command

AT+CLCK=OX,1,1234<cr>

response:

 send command AT+CLCK=AB,0,<pwd><cr>

where:

<pwd> is the network password required to change facility status

 wait for response:

Response

Reason

Action

Barring is now disabled

all calls will be allowed (unbarred)

ERROR

some error occurred

Enable the extended error codes

report (see par. 4.4.2.1) and retry.

+CME ERROR: 4

operation not supported, the

service required is not available

Check command syntax

+CME ERROR: 30

no network service

Check for registration (see par.

4.4.3.1) and signal strength.

+CME ERROR: 16

wrong network password

check network password and retry

For example:

1- Let us assume you want to disable all the barring services you might have previously

activated and the network password of your operator is 0000:

command

AT+CLCK=AB,0,0000<cr>

response:

DTMF tones are managed by specific AT commands. These tones are generated with AT

commands only during voice calls. The minimum duration of a DTMF tone can be set on 10

ms but it must be considered that this value can vary with the limitations of the network.

Group high

Group low

1209 Hz

1336 Hz

1477 Hz

697 Hz

770 Hz