The POTS Plus Plug-in card (Model 751323) provides high voltage isolation for a loop or ground start PBX trunk line serving a power station. The isolator card can also be used for a regular telephone, dial-up modem, or fax.
The POTS Plus Plug-in card isolates a single POTS circuit. It is a direct replacement for Models 751317 and 7501-04.
The card can be housed in the old and the new generation Teleline Isolator shelves: the 3-card shelf, the 5-card shelf, the 8-card shelf, or in any of our High Voltage Interface (HVI) pre-configured units.