Once installed, the console must establish communication with the PBX. This process is governed by the feature.
UMC 7.3 is backward compatible. It can program older KX-TDA series units provided the correct driver and firmware versions are accounted for. It is the last major version before the interface was significantly overhauled for the KX-NS series (which uses a web-based interface). panasonic pbx unified maintenance console 7.3 download