Daniel-Constantin Mierla writes:
On the other hand, if the device doesn't understand gruu, it will just ignore the temp/pub gruu addresses (they are header parameters) -- snom does it since it implement an old draft of gruu (-02 according to their wiki) , where only 'gruu' parameter was specified.
i agree that if ua does not support gruu, it can ignore the extra params, but it is waste of proxy resources and increases packet size if gruu params are included for vain.
-- juha