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4.1.4.3.
DTMF Signal
This Service Mode is used to check the DTMF (Dual Tone Multi Frequency) signal output.
The DTMF signal can be generated using the following procedure.
Service Mode 4 - DTMF Signal
Step
Operation or Unit Condition
LCD Display
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
DTMF Dual Tone Table
Number
DTMF Signal Tones
Number
DTMF Dual Tones
1
697 Hz
0
941 Hz + 1336 Hz
2
770 Hz
1
697 Hz + 1209 Hz
3
852 Hz
2
697 Hz + 1336 Hz
4
941 Hz
3
697 Hz + 1477 Hz
5
1209 Hz
4
770 Hz + 1209 Hz
6
1336 Hz
5
770 Hz + 1336 Hz
7
1477 Hz
6
770 Hz + 1477 Hz
8
1633 Hz
7
852 Hz + 1209 Hz
8
852 Hz + 1336 Hz
9
852 Hz + 1477 Hz
*
941 Hz + 1209 Hz
#
941 Hz + 1477 Hz
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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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