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Tone Encoding Tables
Entering a user ID number, often called a CAP code, is straightforward for most of the encoding formats
supported by the TRC. For example, when encoding DTMF or 5-tone, the digits 0-9 are simply typed in directly.
Some formats do not allow for this straightforward approach. These are Plectron, Quick Call I, and Avcall. This
section explains how to enter a code in these formats.
Plectron Encoding:
The Plectron format does not use Cap Codes. Instead, the frequencies of the tones must be
entered directly using the Any 2-Tones format.
Plectron Tones
282.2 366.0 474.8 615.8 799 1036 1344 1743 2260 2932
294.7 382.2 495.8 643 834 1082 1403 1820 2361 3062
307.8 399.2 517.7 672 871 1130 1465 1901 2465 3197
321.4 416.9 540.7 701 910 1180 1530 1985 2574 3339
335.6 435.3 564.6 732 950 1232 1598 2073 2688 3487
350.5 454.6 589.7 765 992 1287 1669 2165 2808
Avcall & Motorola Quick Call 1 Encoding:
Avcall and Quick Call 1 are dual-tone formats, which means a pair of
tones are sent simultaneously. Two tone-pairs are sent, meaning that four tones in total must be selected. Like
Plectron, above, two digits are entered for each tone. Locate the desired tone in the table to find its corresponding
code. A total of 8 digits must be entered. For example, the tone sequence 645.7 & 312.6 + 881.0 & 1479.1 would
be entered as 07001015.
Avcall & Motorola Quick Call 1 Tones
00
312.6
07
645.7
14
1333.5
21
668.3
28
412.1
35
851.1
42
473.2
49
346.7
01
346.7
08
716.1
15
1479.1
22
741.3
29
457.1
36
944.1
43
524.8
50
977.2
02
384.6
09
794.3
16
398.1
23
822.2
30
507.0
37
371.5
44
582.1
51
1084.0
03
426.6
10
881.0
17
441.6
24
912.0
31
562.3
38
1047.1
45
645.7
04
473.2
11
977.2
18
489.8
25
358.9
32
623.7
39
1161.4
46
716.7
05
524.8
12
1083.9
19
543.3
26
1011.6
33
691.8
40
384.6
47
794.3
06
582.1
13
1202.3
20
602.6
27
1122.1
34
767.4
41
426.6
48
881.0
Tone Charts
The following tone charts are for some selected formats and are provided for your convenience:
