I have a UC540 and i am trying to get an SPA500S expansion module working with a SPA525G phone but it is greyed out when i try to select and configure it.

manwithaphone · ‎03-23-2010

Has anyone else had this problem ?

jan.lipkowski · ‎11-04-2010

Hi Jon, have you found the solution to this as I am experience the same problem right now,

Many thanks in advance!