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MT3334HD8 User Guide
2. Open your communications software and go into terminal mode. Type AT and press E
3. Dial the remote modem and establish your online connection.
4. Type the escape sequence (+++AT<CR> or <BREAK>AT<CR>) to bring your modem into
5. Type ATU2 and press E
6. Enter data from your keyboard. For this test, typing multiple uppercase U characters is a good way
7. To exit the test, enter an escape sequence (+++AT<CR> or <BREAK>AT<CR>), which returns
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should get an OK message. Type AT&E0<CR> to disable error correction.
command mode while maintaining the connection with the remote modem.
. The local modem responds to this command by transmitting an
NTER
unscrambled marking signal, which causes the remote modem to place itself in digital loopback
mode. Then the local modem exits command mode and enters online mode.
to send an alternating test pattern of binary ones and zeroes. Data received by the remote modem
enters its analog receiver, is converted to digital data, is reconverted into analog, and then is
transmitted back to your modem. Your modem passes this test if the data received on your monitor
is the same as the data entered from your keyboard.
the modem to command mode. The modem should respond with an OK message. If you wish to stay
on line with the remote modem for normal data transmission, type ATO and press E
wish to terminate the call, type ATH and press E
to hang up.
NTER
CommPlete Communications Server
; you
NTER
. If you
NTER
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