Incoming CNAM : You can activated the CNAM feature here to get CNAM for your incoming calls. You can choose a DID option like enable or disable CNAM Dip.
Outgoing CNAM : You can send us an email on firstname.lastname@example.org with DID for which you want to update the outgoing CNAM for and the CNAM within 15 characters including space. There will be a one time fee. Please confirm the same at the time of request.