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AT
Command
+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.
+CPMS
This command handles the selection of the preferred message storage area.
+CPWD
This command sets a new password for the facility lock.
+CRC
This command controls whether to present the extended format of the incoming call
indication.
+CREG
This command enables/disables the network status registration unsolicited result
code.
+CRING
This unsolicited event indicates the type of incoming call.
+CRLP
These parameters are used when non-transparent data calls are originated.
+CRTT
This command plays one cycle of a ring tone, stops the cycle in the middle, and sets
the ring tone to be used.
+CSCA
This command handles the selection of the SCA (Service Center Address) and the
TOSCA (Type of SCA).
+CSCS
This command selects the TE character set used on the g20.
+CSDH
This command controls whether detailed header information is shown in the text
mode result code.
+CSMS
This command handles the selection of the message service by returning the types
of messages that are supported by the g20.
+CSQ
This command returns the signal strength received by the g20.
+FAR
This command enables the DCE to adaptively detect the selected message carrier
or V.21 control messages.
+FCL
This parameter allows the terminal to select the DCE's loss-of-carrier delay between
initial loss-of-carrier and qualified loss-of-carrier, where the DCE gives up and exits
the receive mode.
+FCLASS
This command places the TA into a particular mode of operation (data, fax, voice).
+FDD
This command conditions the use of the <DLE> <SUB> pair to encode consecutive
<1/0> <1/0> in data.
+FIT
This command enables a Service Class 1 facsimile DCE to provide a terminal
inactivity timeout that allows the DCE to break away from an unsuccessful
connection attempt at any stage of a facsimile transfer.
98-08901C68-O
Table 137. AT Commands (Alphabetical) (Continued)
Description
Reference Tables
Page
172
119
175
59
139
59
137
158
121
42
124
117
136
228
228
229
228
228
309
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