Thank you, that answers the question. I apologize for not finding that on my own. I found many comments indicating that most providers (except Google) support caller id and it did not occur to me that we must be more specific than that.
I assume then that the
obitalk.com pages would show a box for caller id name if it was supported. If so then it would help if it was shown, but disabled, when it is not supported; that would make it easier for customers to understand.
So now I need to find a provider that does support outgoing caller id name. Hopefully I can find the relevant documentation for each provider now that I know what to look for.