The Loop Current Booster increases low loop current up to 27ma, and/or adds 24VDC to the talk battery (so a line with 24VDC talk battery will have 48VDC talk battery).
One Loop Current Booster Chassis Power Supply Module is needed per 5 lines cards and you can add a maximum of 25 line cards per 25 Line Telephony Chassis.
For more on features and specifications see our Modular Loop Current Booster (#KIT8L).
NOTE: Power is provided to this card through the header sockets on the rear of the card coming from the Chassis. The power jack in the front isn't used in the field.