When making an outbound call, as you spoofed CLI is not always seen a bearer is seen.
You would like to know which bearer numbers might appear.
As per the configuration, the telecommunications provider will pass the CLI as they receive it from your side.
The presentation feature does not guarantee that the display CLI is presented to the called party. Support may vary depending on the country and the operators involved.
It is the remote party that chooses what to display.
The standard is to display the PAI and the provider cannot impose on the remote party to change these settings.
CLI depends on the best effort basis, down-line either a display FROM or PAI as per the remote party's setting.
When CLI is not passed on, then the default ISDN bearer number will be displayed.