NEC NEAX 2400 IMS PH-PC20 Data Link Controller Circuit Card (Refurbished)This circuit card simultaneously provides all Attendant Consoles (ATTs) in the system (except the 1 IMG system) with information such as the termination answer release (abandoned) information of ATT calls, or the station idle busy information through the TSW system link. Key Features: Mnfr. Part #: PH PC20 201247 NEC NEAX 2400 IMS Data Link Controller Circuit Card (Refurbished)