Dtmf - Kenwood NEXEDGE NX-200 Function Reference

14

DTMF

DTMF (Dual Tone Multi-frequency) is the signaling type that uses 2 different frequency tones simultaneously. DTMF code
can be used as a PTT ID or for initiating an individual call, calling a telephone number while connected to a phone line, and
remote control of the transceiver.
DTMF signaling uses 2 different frequencies combined (one lower and one higher frequency) and consists of the 0 to 9, A
to D, * and # tones.
The DTMF functions available in an NXDN Conventional system and NXDN Trunking system are limited as follows.
 NXDN Conventional System
Various functions of DTMF Encode and DTMF Decode can be used in an NXDN Conventional system. However, the
PTT ID function is unavailable.
Also, to decode a DTMF code in an NXDN Conventional system, "DTMF" needs to be configured as the Optional
Signaling to be used on the channel. (Refer to
 NXDN Trunking System
Various functions of DTMF Encode can be used in an NXDN Trunking system. However, the PTT ID function is
unavailable.
DTMF is used when connecting to a telephone line, such as PSTN and PABX, and making voice communication in an
NXDN Trunking system. (Refer to
Also, the DTMF code can be sent during the transmission of Individual Calls or Group Calls by pressing one of the [0]
key to [9] key, the [*] key or the [#] key while pressing and holding the PTT switch.
FUNC (K)/Ver 4.00
Table 14-1 DTMF Tone Frequency List
DTMF Code
Low Frequency
0 941 Hz
1 697 Hz
2 697 Hz
3 697 Hz
4 770 Hz
5 770 Hz
6 770 Hz
7 852 Hz
8 852 Hz
9 852 Hz
A 697 Hz
B 770 Hz
C 852 Hz
D 941 Hz
* 941 Hz
# 941 Hz
Using the Optional Signaling (NXDN) on page
9.14 Communicating with a Telephone (Telephone Call) on page
Frequency
High Frequency
1336 Hz
1209 Hz
1336 Hz
1477 Hz
1209 Hz
1336 Hz
1477 Hz
1209 Hz
1336 Hz
1477 Hz
1633 Hz
1633 Hz
1633 Hz
1633 Hz
1209 Hz
1477 Hz
CONTENTS
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INDEX 359