Panasonic UF-890 Service Manual page 198

5.1.4.3 DTMF Signal
This test mode is used to check the DTMF (Dual Tone Multi Frequency) signal output.
The DTMF signal can be generated using the following procedure.
Step
1 Standby
2 Press "FUNCTION" and then "7".
3 Press "MONITOR" four times, then press "*".
4 Press "4".
5 Press "3" and "START".
6a Press "START" for DTMF Single Tone Generation.
7a Enter the signal number (1-8) to select the DTMF
signal.
6b Press "2" and "START" for Dual Tone Generation.
7b Enter the signal number (0-#) to select the DTMF Dual
tone.
8 Press "CLEAR" to end the signal generation. To select
another signal, repeat step 7a or 7b.
9 Press "STOP" twice to return to standby.
DTMF Single Tone Table
Number
1
2
3
4
5
6
7
8
Operation or Unit Condition
DTMF Signal Tones
697 Hz
770 Hz
852 Hz
941 Hz
1209 Hz
1336 Hz
1477 Hz
1633 Hz
DTMF Dual Tone Table
Number
0
1
2
3
4
5
6
7
8
9
*
#
198
LCD Display
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SET MODE (1-6)
ENTER NO. OR
SERVICE MODE
ENTER NO. OR
MODEM TEST (1-5)
1:SIGNAL TEST
DTMF TEST (1-2)
1.SINGLE
SINGLE TONE
ENTER (1-8)
SINGLE TONE
697Hz
DUAL TONE
ENTER (0-#)
DUAL TONE
(0)
SINGLE TONE
ENTER (1-8)
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DTMF Signal Tones
941 Hz + 1336 Hz
697 Hz + 1209 Hz
697 Hz + 1336 Hz
697 Hz + 1477 Hz
770 Hz + 1209 Hz
770 Hz + 1336 Hz
770 Hz + 1477 Hz
852 Hz + 1209 Hz
852 Hz + 1336 Hz
852 Hz + 1477 Hz
941 Hz + 1209 Hz
941 Hz + 1477 Hz