Appeal No. 2004-0070
Application No. 10/047,529
instrument 104 to test an ASDL circuit 102. The test instrument 100 is connected to the
remote transmission unit via a patch cord 106, which may represent an Ethernet
connection. A similar patch cord 107 may connect the central office transmission unit
with test instrument 104. Col. 4, ll. 29-44.
The throughput test first establishes communications between the test
instrument and the remote test unit and coordinates sending of data traffic through the
ADSL circuit at selected data rates. Data rates are incremented until the upper limit is
determined, with the results formatted and displayed to the user. Col. 5, ll. 11-36. Test
instrument 100 may execute an instrument control program to implement the method,
and may further control the operation of test instrument 104 via commands sent over
the ADSL circuit 102. Col. 5, ll. 41-45. The test instruments may be identical (col. 5, ll.
45-49), and may simultaneously generate upstream and downstream data traffic for
testing (col. 6, ll. 46-52). Figure 4 depicts a simplified diagram of a typical test
instrument, which includes a frame processor 120 to extract information from received
frames, a traffic generator 126 to generate network traffic, and a display 132 to display
the results of the throughput test. Col. 7, ll. 43-65. The remote and central
transmission units may be incorporated into the test unit 100 and remote test
instrument 104 to more directly characterize the twisted-pair telephone line. Col. 8, ll.
32-37.
-8-
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