said by JMJimmy:
Also, Bhell would have had to modify it to work with it's stingers wouldn't they?
No, The Stingers are owned by ALU. So, they would be modifying there own code to do it. That code, as long as it is not based on a FOSS license, would not need to be published/released.
Remember, code running on a Linux system that is developed by you, is not considered a derivative work (Linus has this in the kernel modified GPL license file). Even binary blobs or other closed drivers are not considered derivatives, BUT, that has not been testing court to my knowledge.
The only modification Bell will do is modify the HTML interface for their customers (if that). That's not a derivative work, and is not under the GPL. So, no need to release it to anyone.