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MINI-MODEM (56 KBPS DATA/FAX MODEM)
5. Testing Your Modem
5.1 Local Analog Loopback Test/V.54 Loop 3
In this test, data from your computer or terminal is sent
to your modem’s transmitter, converted into analog
form, looped back to the receiver, converted into
digital form, and then received back at your monitor
for verification. No connection to the phone line is
required. See
Figure 5-1
.
Figure 5-1. Local Analog Loopback Test.
UUUUU
UUUUU
Computer or Terminal
Type AT&T1; hit ENTER
Digital
Analog
Local Modem