Greetings, We have deployed a 3CX phone system recently and have been having much trouble with the Outbound CallerID Functions. We are using the latest version of 3CX and an Vega SIP Appliance. The issue we are having is that the outbound caller id is not being passed from 3CX to the Vega, so the VEGA is assigning one. Here is what I have tried Changing each extension's Caller ID in the SIP field and Outbound caller ID. Changing the rules for the extensions to force the external caller ID to be the number Setting the Outbound rule above all other rules. (It is my understanding they are linear) I attempted to contact the Vender of the 3CX package we bought but we really haven't got a good response to fix it. I have been looking around on the forums here and can not really find a good solution or a guide of steps to follow. Can someone chime in and give us a list of things to try? Preferably in order of operations of the 3cx Server? We are really looking forward to any help we can get.