My customer has 40 phones/extensions. I have a "Page All" paging group. Paging and Intercom is enabled on the phones (all Yealink T48S and T42S) and on all extensions and groups. Everything *Almost* works as designed. I have one extension on a Yealink T42S that will not intercom. He can use speakerphone just fine but Intercom/Paging will not work. He has permissions. The phone is correctly set with permissions too. I am guessing at this point, that I have a defective phone. Anyone got any different ideas?