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4.3.3.11
+CLIR, Calling Line Identification Restriction
This command instructs the g20 to query, enable or disable the presentation of the CLI (calling line ID) of a MO call to the called
party. The restriction of the CLI (disable presentation) is dependent both on the g20 and on the network.
The network enables three possible provisions of CLIR:
• Not provisioned (CLIR Off - presentation allowed)
• Provisioned permanently
• Provisioned with Temporary mode
The provision is fixed and cannot be changed by an AT command.
Temporary Mode:
Temporary mode can be in one of two states:
• A - Presentation restricted (CLIR On) as default.
• B - Presentation allowed (CLIR Off) as default. A subscriber to Temporary mode always has a default subscription to state
A or B. Temporary-mode provisioning means that the terminal can request the g20 to Restrict or Present the CLI when
placing a MO call.
When a service is in state A, and the terminal wants to enable the CLI presentation (turn CLIR off) for a single call,
it can do so using the ATD command. This does not change the Temporary mode state. This can also be done
when the service is in state B and the terminal wants to disable the CLI presentation (turn CLIR on) for a single call.
Note
When setting the g20 through the handset (or by using +CKPD), the settings are valid only for the next mobile
originated call. After the call, the settings return to default.
Set Command
The Set command instructs the g20 to enable/disable CLI restriction for all MO calls.
The Set commands deals only with Temporary mode. Therefore, if the network provisioning is not in Temporary
mode, the Set command setting is irrelevant.
Note
Command
+CLIR=[<n>]
Read Command
The Read command returns the current setting of CLIR on the network <m> and on the g20 <n>.
Command
+CLIR?
98-08901C68-O
Response/Action
OK
Response/Action
+CLIR:<n>,<m>
OK
AT Commands Reference
75
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