Auerswald COMpact 4000 Operation Manual page 445

Functions
Number Presentation (Incoming)
Configuring Number Presentation (Incoming) for Group
Note:
For the option No, the telephone service Connected Line Identification
Restriction (COLR2) must be released by the network provider.
On a connection with a GSM gateway, the phone number presentation
configured in the PBX is not used because the actual phone number
presentation is directly configured in the individual GSM gateway.
On a connection with CLIP no screening enabled, the number presentation
defined here is not considered.
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COMpact 4000 - Firmware V6.6A - Installation, Operation and Configuration V03 03/2016