| US 7,539,298 B1 | ||
| Passive termination for redundant telecommunication receivers connected to a single twisted pair | ||
| Andrew T. Ruble, Harvest, Ala. (US) | ||
| Assigned to Adtran, Inc., Huntsville, Ala. (US) | ||
| Filed on Nov. 05, 2004, as Appl. No. 10/982,329. | ||
| Int. Cl. H04M 5/00 (2006.01); H04M 1/00 (2006.01) | ||
| U.S. Cl. 379—326 [379/413.04] | 12 Claims |
| 1. For use with telecommunication system equipment having a backplane and a plurality of card slots in which telecommunication
line cards are installed for engagement with said backplane, a method of terminating a telecommunication wireline pair of
said backplane comprising the steps of:
(a) connecting a first end of a termination circuit comprising a resistor to one wire of said telecommunication wireline pair;
(b) connecting a second end of said termination circuit to a plurality of first terminals that are adapted to be engaged by
associated first ends of jumper conductors installed on respective ones of a plurality of line cards;
(c) connecting another wire of said telecommunication wireline pair to a plurality of second terminals, respective ones of
which are adjacent to respective ones of said plurality of first terminals, said second terminals being adapted to be engaged
by associated second ends of said jumper conductors installed on respective ones of said plurality of line cards; and
(d) inserting a telecommunication line card into one of said card slots so as to bring first and second ends of a jumper conductor
installed on said telecommunication line card into electrical contact with a pair of adjacent first and second terminals,
and thereby bridge said telecommunication wireline pair with said termination circuit.
|