VOICE MAIL DAUGHTER-BOARD MODULE (HARDWARE) HAVING CAPABILITY TO SUPPORT MAXIMUM 64 SIMULTANEOUS VOICE MAIL SESSIONS FOR ETERNITY GENX/MENX/LENX CPU CARD. UCS SERVER LICENSE IS SUPPLIED WITH 4 BUILT-IN VMS CHANNELS. SEPARATE VMS CHANNEL LICENSE IS REQUIRED TO ACTIVATE DESIRED NUMBER OF CHANNELS.,Max. Number of Modules on CPU Card: 1 (64 Channels)