> For the complete documentation index, see [llms.txt](https://docs.itgrix.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.itgrix.com/custom_common.md).

# Useful customizations (any CRM)

- [Audio file name customization](https://docs.itgrix.com/custom_common/audio-file-name-customization.md)
- [Call data (call\_full) in customizations](https://docs.itgrix.com/custom_common/call-data-call_full-in-customizations.md)
- [Change the number / context for calling to asterisk](https://docs.itgrix.com/custom_common/change-the-number-context-for-calling-to-asterisk.md)
- [Change phone number before sending data to CRM](https://docs.itgrix.com/custom_common/change-phone-number-before-sending-data-to-crm.md)
- [Black and white lists](https://docs.itgrix.com/custom_common/black-and-white-lists.md): How to setup?