Viking Toll Restricter

Viking Toll RestricterTR-1 The TR-1 can block all operator assisted or 1 + dialing or up to 46 specific area codes or exchanges. The unit has a non-volatile memory. No batteries or power supply required. A 1-to-50 minute call timer is provided. Compatible with loop, ground start, Centrex and PABX lines. Completely programmable.