| US 7,577,088 B2 | ||
| System and method to backup communication occurring across a plurality of subscriber lines | ||
| Brad D. Tidwell, Harvest, Ala. (US); Jamie S. Kelly, Madison, Ala. (US); and John B. Bartell, Madison, Ala. (US) | ||
| Assigned to Adtran, Inc., Huntsville, Ala. (US) | ||
| Filed on Jan. 16, 2004, as Appl. No. 10/758,903. | ||
| Claims priority of provisional application 60/440847, filed on Jan. 17, 2003. | ||
| Prior Publication US 2004/0146004 A1, Jul. 29, 2004 | ||
| Int. Cl. G01R 31/08 (2006.01) | ||
| U.S. Cl. 370—217 [379/25] | 31 Claims |
| 1. A communication system, comprising:
a first transceiver coupled to a first subscriber line the first transceiver configured to communicate via the first subscriber
line with a remote transceiver that is located at a remote premises and coupled to the first subscriber line, the first subscriber
line comprising a first plurality of conductive connections extending from the first transceiver to the remote transceiver
coupled to the first subscriber line:
a second transceiver coupled to a second subscriber line, the second transceiver configured to communicate via the second
subscriber line with a remote transceiver that is located at the remote premises and coupled to the second subscriber line,
the second subscriber line comprising a second plurality of conductive connections extending from the second transceiver to
the remote transceiver coupled to the second subscriber line;
a third transceiver coupled to a third subscriber line, the third transceiver configured to communicate via the third subscriber
line with a remote transceiver that is located at the remote premises and coupled to the third subscriber line, the third
subscriber line comprising a third plurality of conductive connections extending from the third transceiver to the remote
transceiver coupled to the third subscriber line;
logic configured to receive a data stream comprising data to be received by data communication equipment at the remote premises,
the logic configured to split the data stream such that a portion of the data is modulated and transmitted by the first transceiver
across the first plurality of conductive connections to the remote transceiver coupled to the first subscriber line while
a portion of the data stream is modulated and transmitted by the second transceiver across the second plurality of conductive
connections to the remote transceiver coupled to the second subscriber line, the logic configured to switch communication
from the first transceiver to the third transceiver in response to a detection of a communication problem associated with
the first subscriber line such that a portion of the data is modulated and transmitted by the third transceiver across the
third plurality of conductive connections to the remote transceiver coupled to the third subscriber line while a portion of
the data stream is modulated and transmitted by the second transceiver across the second plurality of conductive connections
to the remote transceiver coupled to the second subscriber line, the logic further configured to switch communication from
the second transceiver to the third transceiver in response to a detection of a communication problem associated with the
second subscriber line such that a portion of the data is modulated and transmitted by the third transceiver across the third
plurality of conductive connections to the remote transceiver coupled to the third subscriber line while a portion of the
data stream is modulated and transmitted by the first transceiver across the first plurality of conductive connections to
the remote transceiver coupled to the first subscriber line; and
a control element configured to sum power from at least two of the subscriber lines.
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