Hi,There is no special License which you require to register EX60, if you have device registration License on CUCM.Just wanted to clarify whether recent device pack is installed if device type is not visible on add Phone page.Regards,Vivek
Hi Bill,Please verify following information:1. SX20 is integrated as H323 Client in CUCM As per the configuration you mentioned related to SX20 The NAT Settings on the SX20 have the Public IP, NAT set to Auto, Call Setup to Direct and Port Allocation...