[Asterisk-Users] IAX aproprietary protocol

[Julio Arruda]

Stefan de Konink wrote:
> On Wed, 27 Apr 2005, Joseph wrote:
> 
>>How can proprietary protocol be open protocol?
> 
> 
> If the protocol is fully documentated and this documententation is
> available to anyone you can speak of a open protocol. It is not an open
> 'standard', because it is only supported by Digium, thus proprietary.
> 
> http://en.wikipedia.org/wiki/Proprietary
> 

But there are royalties or something like that ?
I understand that proprietary protocols CAN be published, but what make 
them proprietary is the requiremenf or royalties or at least a 'ok' from 
the owner ?