Appeal No. 97-2763
Application No. 08/580,790
data, and not the “transmission of the ‘test information’
along with the transmission of the ‘message information.’”
The evaluation performed by Izawa with the test cell data is
performed at the input of the ISDN, and not at the “exit
boundary” of an exchange. For this reason, Izawa cannot
replace “the transition monitoring cells by newly formed
transmission monitoring cells" “before the information cell
blocks pass the exit boundary . . . .” (claims 1 through 8).
Thus, the obviousness rejection of claims 1 through 8 based on
the teachings of Izawa is reversed.
Uchida discloses apparatus for testing the switches of an
ATM exchanger. In one of the disclosed forms of the testing
apparatus (Figure 5B), test cell inserters 511 are provided at
the input highways 509 to generate test cells with virtual
identifiers attached thereto (column 11, lines 8 through 25).
Test cell tag attachers 512 attach tags to the multiplexed
test cells from test cell inserters 511 to enable switching
operations to be performed at all crossing points in the
multistage self-routing module 508 (column 11, lines 37
through 40). After the multistage self-routing module 508
performs a switching function to route test cells, the test
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