Toshiba T2000 Maintenance Manual page 78

This subtest is used with subtest 03 as described above.
This subtest receives the data from the send side, then returns the data.
Subtest 05 Card modem loopback (1200BPS)
NOTE: To execute this subtest, a built-in modem must be installed.
This subtest sends the data from the RS-232-C direct cable to the built-in modem.
The same data is then sent from the modem and compared to the original data.
Subtest 06 Interrupt test
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