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Product Features
Access
Access Control Commands
A/ This command repeats the last command. 170
AT This command checks the AT communication and only returns OK. 171
+CPIN This command is only relevant for phones that use SIM cards. It unlocks the SIM
card when the proper SIM PIN is provided, and unblocks the SIM card when the
proper SIM PUK is provided.
172
+CPWD This command sets a new password for the facility lock. 175
+CLCK This command locks, unlocks or interrogates a g20 or a network facility <fac>. 178
Modem Configuration and Profile
Modem Register Commands
V This command determines the response format of the data adapter and the contents
of the header and trailer transmitted with the result codes and information
responses.
181
Q This command determines whether to output/suppress the result codes. 183
E This command defines whether the g20 echoes the characters received from the
accessory, (whether input characters are echoed to output).
184
X This command defines the data adaptor response set, and the CONNECT result
code format.
185
S This command reads/writes values of the S-registers. 186
S0 This S-parameter represents the number of rings before the g20 is answered
automatically.
187
S3 This S-parameter represents the decimal IA5 (International Alphabet No. 5) value of
the command line termination character that terminates an incoming command line.
187
S4 This S-parameter represents the decimal IA5 (International Alphabet No. 5) value of
the response formatting character that is generated by the g20 as part of the header,
trailer, and terminator for result codes and information text, along with the S3
parameter.
187
S5 This S-parameter represents the decimal IA5 (International Alphabet No. 5) value of
the command line editing character that the g20 recognizes as a request to delete
the immediately preceding character from the command line.
187
Table 3. AT Commands (Continued)
AT
Command
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