Multi-Tech Systems MT2834ZPX 사용자 설명서
58
MT2834ZPX Owner's Manual
5.
Data is typed from the remote keyboard. For this test, typing
multiple upper case
multiple upper case
"U" characters is a good way to send an
alternating test pattern of ones and zeros. The data received by
the local modem will enter its analog receiver, be converted to
digital data, be reconverted into analog, and then looped through
its transmitter back to the remote modem. Your modem passes
this test if the data entered from the remote keyboard is the same
as the data received on the remote monitor.
the local modem will enter its analog receiver, be converted to
digital data, be reconverted into analog, and then looped through
its transmitter back to the remote modem. Your modem passes
this test if the data entered from the remote keyboard is the same
as the data received on the remote monitor.
Figure 6-2. Digital Loopback Test (local/manual)
6.
When testing is complete, you may end the test by typing an
Escape Sequence (
Escape Sequence (
+++AT<CR> or <BREAK>AT<CR>) to bring
your modem into Command mode. The modem should respond
with an
with an
OK message. If you wish to stay On-line with the remote
modem for normal data transmission, type
AT0 and hit ENTER. If
you wish to terminate the call, type
ATH and hit ENTER to hang
up.
Digital Loopback Test/V.54 Loop 2 (Remote/
Automatic)
Automatic)
In this test, your modem must be On-line with another modem set up
to respond to a request for Digital Loopback (note that some modems
may not support Remote Loopback or may have this feature disabled).
to respond to a request for Digital Loopback (note that some modems
may not support Remote Loopback or may have this feature disabled).
The test procedure is as follows:
1.
Go into Terminal mode. Type
AT and hit ENTER; you should get
an
OK message.
2.
Dial the remote modem by entering the Dial command and the
phone number, to establish On-line mode.
phone number, to establish On-line mode.