As part of our efforts to be compliant with the rules and best practices that govern telecommunications in the USA and Canada, outgoing caller IDs our customers are using for their fax transmissions cannot be set to anonymous, blank or invalid numbers.
Acceptable caller IDs are valid 10-digit/1+10-digit numbers.
By default, your Caller ID will be your account’s local number (DID). If you have multiple numbers, you may set it to any of those.
If you're having trouble or cannot change your caller ID please contact customer support for more information.
