Hello Greg,
thanks for the clarification.
Anyway, if these restrictions cannot be made it doesn't matter to me too much. However, if it was possible for me to restrict the customer to just one SIP phone connection I would definitely do so. I think it Is a good idea...but that is just my opinion :-)
Just apply the patch and set the parameter as described in the email and you will be able to do the restriction.
regards, Jan.