This post describes a fault that causes number display abnormally.
The symptoms are as follows:
The number is displayed incorrectly.
The number cannot be displayed.
The possible causes are as follows:
The Calling Line Identification Presentation (CLIP) service has not been enabled on the carrier side.
The Calling Line Identification Restriction (CLIR) service has been enabled for the user. If the CLIR service is enabled for a user, the user's number cannot be displayed for the called party.
The related number change rule is incorrect.
