METHOD AND SYSTEM FOR PROVIDING DC POWER ON LOCAL TELEPHONE LINES
A telephone unit device connectable in series between a telephone set and a wire pair coupled to a telephone service and carrying DC power and an AC telephone signal. The device includes: a first connector connectable to the wire pair; a second connector connectable to the telephone set; means connected between the first and second connectors for passing substantially without change the AC telephone signal between the wire pair and the telephone set; and means connected between the first and second connectors for receiving DC power only from the wire pair and converting the DC power to a level suitable for proper telephone operation of the telephone set connected thereto.
1 . A telephone unit device connectable in series between a telephone set and a wire pair coupled to a telephone service and carrying DC power and an AC telephone signal, said device comprising:
a first connector connectable to the wire pair;
a second connector connectable to the telephone set;
means connected between said first and second connectors for passing substantially without change the AC telephone signal between the wire pair and the telephone set; and
means connected between said first and second connectors for receiving DC power only from the wire pair and converting the DC power to a level suitable for proper telephone operation of the telephone set connected thereto.