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9. 7. 6
Suppression of the call number display
The display of the call number to the called party can be suppressed (CLIR). CLIR
can be permanently activated or deactivated for each user in the Configuration
Manager. Each user can also use a */# function code to activate or deactivate CLIR
either permanently or only temporarily for a single call.
Detailed description of temporary CLIR
CLIR is activated temporarily using *31 before dialling an external call number. If
CLIR is already permanently activated, it can be deactivated temporarily using #31
before dialling. The permanent CLIR settings are restored once the call is comple-
ted.
Scope
Suppressing the call number display is supported only for external calls via digital
network interfaces with the DSS1 protocol.
Notes:
– The function is not executed when used in connection with ISDN
supplementary services in the exchange such as ECT, PARE or CD,
i.e. the call number is displayed to the called party.
– Depending on the network provider and service provider it may be
necessary to subscribe to CLIR.
Suppressing the call number display is not possible in the following cases. The out-
going call is rejected; the display reads
tone:
• External calls via analogue exchange interfaces
• Internal calls and calls to PISN users or virtual network PISN users
• In combination with an abbreviated dialling that contains other */# function co-
des
• In combination with dialling using a line key
514
Not available
and the user obtains the busy
Funciones y prestaciones del sistema a partir de R2.1
syd-0370/1.2 – R2.1 – 07.2012
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