Matrix ETERNITY NE System Manual 465
Calling Line Identity Restriction (CLIR)
What's this?
The ETERNITY allows extension users to suppress their identity, i.e. extension number and name, when they call
other extensions. This feature is called Calling Line Identity Restriction (CLIR).
Extensions that have 'CLIR Override' facility can view the CLI of those that have suppressed it with CLIR.
This is a feature of the PBX and not the PSTN. It is applicable for internal calls only.
Needless to say, this feature will work only on the proprietary digital key phone EON and SLTs that support Caller
Line Identification (CLI).
How it works
• Extension A has CLIR enabled.
• Extension B does not have CLIR Override enabled.
• Extension C has CLIR Override enabled.
• When A calls B, B cannot view the extension name and number of A.
• When A calls C, C can view A's extension name and number.
Now,
• Extension D calls extension E.
• A picks up the call.
• D will be able to view A's name and extension only if it has CLIR Override enabled and is a digital key
phone, EON.
CLIP and Caller ID Presentation while Transfer: Both these features will not work if CLIR is enabled.
How to configure
'CLIR' and 'CLIR Override' are Class-of-Service-dependant features. Extensions that are to be allowed these
features, must have them enabled in their “Class of Service (COS)”.
By default, both these features are disabled on all extensions of ETERNITY. Thus, none of the extensions of the
ETERNITY can suppress their CLI or force any other extension to display its CLI.
Decide which extensions should be allowed CLIR and which should be allowed CLIR Override and accordingly
configure their COS. See “Basic Settings” for instructions on configuring COS of the different Extension types: SLT,
D K P, SI P.
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