Matrix Telecom ETERNITY NE - Calling Line Identity Restriction (CLIR)

Matrix ETERNITY NE System Manual 741
Calling Line Identity Restriction (CLIR)
SARVAM UCS 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 system and not the PSTN. It is applicable for internal calls only.
This feature will work only on the Matrix Extended IP Phone, VARTA UC Clients 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 SLT that
supports CLI.
Feature Interactions:
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-dependent 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 SARVAM UCS. Thus, none of the extensions of
SARVAM UCS 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. For instructions, see Class of Service under “SLT Extensions” and “SIP Extensions”.
How to use
For Extended IP Phone Users
To enable CLIR
• Press DSS Key assigned to CLIR
121
.
OR
• Dial 1031 to enable CLIR.
121. You are recommended to assign a DSS Key with LED to this feature. When the assigned DSS key is pressed, it will glow red indi-
cating that CLIR is enabled.