I'm currently using Asterisk but want to move to 3cx for its shared line appearances in the future. Something I've not figured out how to do is modify the caller ID? There seems to not be any way to modify the caller ID sent to IP phones? For example at the moment I have incoming calls prefixed (e.g adding text, e.g "MAIN NUMBER:") On my IP phones display, it shows: MAIN NUMBER: 07XXXXXXX 07XXXXXXX This way I know if its a direct call (e.g DIRECT: 07XXXXXXX) or coming from the main number... This is currently the only thing holding me back from 3cx!