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FAX-L1000 Chapter 2: Operating Instructions
c) Tonal and DTMF signal reception tests
The tonal and DTMF signal reception test is selected by pressing the numeric key 6 from
the MODEM NCU test menu. In these tests, you can check whether the tonal signals and
DTMF signals received from the modular jack are detected by the modem.
The 462 ±14 Hz test is included because the modem has a 462±14 Hz detection function.
Figure 2-48 Tonal and DTMF Signal Reception Tests
4-6 : TONE Rx 0 0 0
Tonal signal reception test
000
When 462±14 Hz signal detected, 0 → 1
When 1100±30 Hz signal detected, 0 → 1
When 2100±25 Hz signal detected, 0 → 1
DTMF signal reception test
4-6 : TONE Rx 0 0 0
1234567890
The received DTMF signals are displayed in
order from the right on the second line of the
display.