4.4 Remote Digital Loopback with Self-Test
The remote digital loopback with self-test checks the integrity of the local modem,
telephone line, and the remote modem. In this test the modem activates an internal
test pattern generator. A test data stream is sent over the telephone line to the remote
modem and looped through a remote digital loop to an internal error counter in the
local modem as shown in Figure 4-4.
Fig. 4-4 Remote Digital Loopback with Self-test
To perform the remote digital loopback with self-test, first make sure that the modem
is on-line to the remote modem. The modem can be either in the originating mode or
in the answer mode.
Example - The test timer is set and the test is performed with no errors
4 - TESTING
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